Home / 721,909.81-1,083,929.16-402,685.37

Finding the Fourth Proportional to 721,909.81, 1,083,929.16 and 402,685.37

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Solution

The fourth proportional to 721,909.81, 1,083,929.16 and 402,685.37 is: 604,621.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,909.81 : 1,083,929.16 = 402,685.37 : x
  2. Step 2: Convert to fraction form
    721,909.81/1,083,929.16 = 402,685.37/x
  3. Step 3: Cross multiply
    721,909.81x = 1,083,929.16 × 402,685.37
  4. Step 4: Simplify right side
    721,909.81x = 436,482,407,415.32
  5. Step 5: Solve for x
    x = 436,482,407,415.32/721,909.81
  6. Step 6: Final answer
    x = 604,621.80

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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.