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Finding the Fourth Proportional to 723,166.68, 997,864.92 and 400,876.50

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Solution

The fourth proportional to 723,166.68, 997,864.92 and 400,876.50 is: 553,151.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,166.68 : 997,864.92 = 400,876.50 : x
  2. Step 2: Convert to fraction form
    723,166.68/997,864.92 = 400,876.50/x
  3. Step 3: Cross multiply
    723,166.68x = 997,864.92 × 400,876.50
  4. Step 4: Simplify right side
    723,166.68x = 400,020,596,602.38
  5. Step 5: Solve for x
    x = 400,020,596,602.38/723,166.68
  6. Step 6: Final answer
    x = 553,151.31

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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.