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Finding the Fourth Proportional to 670,013.95, 924,654.71 and 379,681.80

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Solution

The fourth proportional to 670,013.95, 924,654.71 and 379,681.80 is: 523,980.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,013.95 : 924,654.71 = 379,681.80 : x
  2. Step 2: Convert to fraction form
    670,013.95/924,654.71 = 379,681.80/x
  3. Step 3: Cross multiply
    670,013.95x = 924,654.71 × 379,681.80
  4. Step 4: Simplify right side
    670,013.95x = 351,074,558,149.60
  5. Step 5: Solve for x
    x = 351,074,558,149.60/670,013.95
  6. Step 6: Final answer
    x = 523,980.97

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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.