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Finding the Fourth Proportional to 487,624.30, 730,010.85 and 347,656.30

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Solution

The fourth proportional to 487,624.30, 730,010.85 and 347,656.30 is: 520,468.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,624.30 : 730,010.85 = 347,656.30 : x
  2. Step 2: Convert to fraction form
    487,624.30/730,010.85 = 347,656.30/x
  3. Step 3: Cross multiply
    487,624.30x = 730,010.85 × 347,656.30
  4. Step 4: Simplify right side
    487,624.30x = 253,792,871,070.86
  5. Step 5: Solve for x
    x = 253,792,871,070.86/487,624.30
  6. Step 6: Final answer
    x = 520,468.06

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1.5x scale

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.