Home / 663,897.32-916,174.10-377,417.40

Finding the Fourth Proportional to 663,897.32, 916,174.10 and 377,417.40

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Solution

The fourth proportional to 663,897.32, 916,174.10 and 377,417.40 is: 520,833.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,897.32 : 916,174.10 = 377,417.40 : x
  2. Step 2: Convert to fraction form
    663,897.32/916,174.10 = 377,417.40/x
  3. Step 3: Cross multiply
    663,897.32x = 916,174.10 × 377,417.40
  4. Step 4: Simplify right side
    663,897.32x = 345,780,046,769.34
  5. Step 5: Solve for x
    x = 345,780,046,769.34/663,897.32
  6. Step 6: Final answer
    x = 520,833.62

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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.