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Finding the Fourth Proportional to 676,988.80, 934,206.55 and 371,006.84

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Solution

The fourth proportional to 676,988.80, 934,206.55 and 371,006.84 is: 511,968.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,988.80 : 934,206.55 = 371,006.84 : x
  2. Step 2: Convert to fraction form
    676,988.80/934,206.55 = 371,006.84/x
  3. Step 3: Cross multiply
    676,988.80x = 934,206.55 × 371,006.84
  4. Step 4: Simplify right side
    676,988.80x = 346,597,021,430.80
  5. Step 5: Solve for x
    x = 346,597,021,430.80/676,988.80
  6. Step 6: Final answer
    x = 511,968.62

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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.