Home / 729,337.26-1,005,280.77-487,531.61

Finding the Fourth Proportional to 729,337.26, 1,005,280.77 and 487,531.61

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Solution

The fourth proportional to 729,337.26, 1,005,280.77 and 487,531.61 is: 671,988.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,337.26 : 1,005,280.77 = 487,531.61 : x
  2. Step 2: Convert to fraction form
    729,337.26/1,005,280.77 = 487,531.61/x
  3. Step 3: Cross multiply
    729,337.26x = 1,005,280.77 × 487,531.61
  4. Step 4: Simplify right side
    729,337.26x = 490,106,152,871.78
  5. Step 5: Solve for x
    x = 490,106,152,871.78/729,337.26
  6. Step 6: Final answer
    x = 671,988.36

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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.