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Finding the Fourth Proportional to 642,693.84, 958,294.80 and 625,038

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Solution

The fourth proportional to 642,693.84, 958,294.80 and 625,038 is: 931,968.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,693.84 : 958,294.80 = 625,038 : x
  2. Step 2: Convert to fraction form
    642,693.84/958,294.80 = 625,038/x
  3. Step 3: Cross multiply
    642,693.84x = 958,294.80 × 625,038
  4. Step 4: Simplify right side
    642,693.84x = 598,970,665,202.40
  5. Step 5: Solve for x
    x = 598,970,665,202.40/642,693.84
  6. Step 6: Final answer
    x = 931,968.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.