Home / 721,875.10-996,196.44-399,614.98

Finding the Fourth Proportional to 721,875.10, 996,196.44 and 399,614.98

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Solution

The fourth proportional to 721,875.10, 996,196.44 and 399,614.98 is: 551,473.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,875.10 : 996,196.44 = 399,614.98 : x
  2. Step 2: Convert to fraction form
    721,875.10/996,196.44 = 399,614.98/x
  3. Step 3: Cross multiply
    721,875.10x = 996,196.44 × 399,614.98
  4. Step 4: Simplify right side
    721,875.10x = 398,095,020,446.67
  5. Step 5: Solve for x
    x = 398,095,020,446.67/721,875.10
  6. Step 6: Final answer
    x = 551,473.55

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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.