Home / 724,645.20-1,000,012.32-402,355.92

Finding the Fourth Proportional to 724,645.20, 1,000,012.32 and 402,355.92

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Solution

The fourth proportional to 724,645.20, 1,000,012.32 and 402,355.92 is: 555,252.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,645.20 : 1,000,012.32 = 402,355.92 : x
  2. Step 2: Convert to fraction form
    724,645.20/1,000,012.32 = 402,355.92/x
  3. Step 3: Cross multiply
    724,645.20x = 1,000,012.32 × 402,355.92
  4. Step 4: Simplify right side
    724,645.20x = 402,360,877,024.93
  5. Step 5: Solve for x
    x = 402,360,877,024.93/724,645.20
  6. Step 6: Final answer
    x = 555,252.25

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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.