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Finding the Fourth Proportional to 710,068.95, 979,902.97 and 387,788.55

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Solution

The fourth proportional to 710,068.95, 979,902.97 and 387,788.55 is: 535,152.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,068.95 : 979,902.97 = 387,788.55 : x
  2. Step 2: Convert to fraction form
    710,068.95/979,902.97 = 387,788.55/x
  3. Step 3: Cross multiply
    710,068.95x = 979,902.97 × 387,788.55
  4. Step 4: Simplify right side
    710,068.95x = 379,995,147,232.89
  5. Step 5: Solve for x
    x = 379,995,147,232.89/710,068.95
  6. Step 6: Final answer
    x = 535,152.46

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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.