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Finding the Fourth Proportional to 508,793.40, 761,877.90 and 403,817.40

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Solution

The fourth proportional to 508,793.40, 761,877.90 and 403,817.40 is: 604,684.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,793.40 : 761,877.90 = 403,817.40 : x
  2. Step 2: Convert to fraction form
    508,793.40/761,877.90 = 403,817.40/x
  3. Step 3: Cross multiply
    508,793.40x = 761,877.90 × 403,817.40
  4. Step 4: Simplify right side
    508,793.40x = 307,659,552,695.46
  5. Step 5: Solve for x
    x = 307,659,552,695.46/508,793.40
  6. Step 6: Final answer
    x = 604,684.64

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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.