Home / 1,289,180,153.60-1,779,012,981.12-732,261,466.88

Finding the Fourth Proportional to 1,289,180,153.60, 1,779,012,981.12 and 732,261,466.88

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Solution

The fourth proportional to 1,289,180,153.60, 1,779,012,981.12 and 732,261,466.88 is: 1,010,489,225.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,180,153.60 : 1,779,012,981.12 = 732,261,466.88 : x
  2. Step 2: Convert to fraction form
    1,289,180,153.60/1,779,012,981.12 = 732,261,466.88/x
  3. Step 3: Cross multiply
    1,289,180,153.60x = 1,779,012,981.12 × 732,261,466.88
  4. Step 4: Simplify right side
    1,289,180,153.60x = 1,302,702,655,153,492,736
  5. Step 5: Solve for x
    x = 1,302,702,655,153,492,736/1,289,180,153.60
  6. Step 6: Final answer
    x = 1,010,489,225.66

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Double scale
Find fourth proportional to 1,289,180,154.60, 1,779,012,982.50 and 732,261,467.88
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.