Home / 1,083,445,012.12-1,495,281,755.70-643,411,864.12

Finding the Fourth Proportional to 1,083,445,012.12, 1,495,281,755.70 and 643,411,864.12

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Solution

The fourth proportional to 1,083,445,012.12, 1,495,281,755.70 and 643,411,864.12 is: 887,984,171.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,083,445,012.12 : 1,495,281,755.70 = 643,411,864.12 : x
  2. Step 2: Convert to fraction form
    1,083,445,012.12/1,495,281,755.70 = 643,411,864.12/x
  3. Step 3: Cross multiply
    1,083,445,012.12x = 1,495,281,755.70 × 643,411,864.12
  4. Step 4: Simplify right side
    1,083,445,012.12x = 962,082,021,819,563,520
  5. Step 5: Solve for x
    x = 962,082,021,819,563,520/1,083,445,012.12
  6. Step 6: Final answer
    x = 887,984,171.84

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Double scale
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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.