Home / 781,699,587.20-1,172,549,380.80-398,697,372.80

Finding the Fourth Proportional to 781,699,587.20, 1,172,549,380.80 and 398,697,372.80

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Solution

The fourth proportional to 781,699,587.20, 1,172,549,380.80 and 398,697,372.80 is: 598,046,059.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,699,587.20 : 1,172,549,380.80 = 398,697,372.80 : x
  2. Step 2: Convert to fraction form
    781,699,587.20/1,172,549,380.80 = 398,697,372.80/x
  3. Step 3: Cross multiply
    781,699,587.20x = 1,172,549,380.80 × 398,697,372.80
  4. Step 4: Simplify right side
    781,699,587.20x = 467,492,357,603,226,752
  5. Step 5: Solve for x
    x = 467,492,357,603,226,752/781,699,587.20
  6. Step 6: Final answer
    x = 598,046,059.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.