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Finding the Fourth Proportional to 658,423.36, 908,698.01 and 371,961.91

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Solution

The fourth proportional to 658,423.36, 908,698.01 and 371,961.91 is: 513,349.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,423.36 : 908,698.01 = 371,961.91 : x
  2. Step 2: Convert to fraction form
    658,423.36/908,698.01 = 371,961.91/x
  3. Step 3: Cross multiply
    658,423.36x = 908,698.01 × 371,961.91
  4. Step 4: Simplify right side
    658,423.36x = 338,001,047,412.80
  5. Step 5: Solve for x
    x = 338,001,047,412.80/658,423.36
  6. Step 6: Final answer
    x = 513,349.11

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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.