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Finding the Fourth Proportional to 713,177.52, 984,180.40 and 390,907.68

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Solution

The fourth proportional to 713,177.52, 984,180.40 and 390,907.68 is: 539,450.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,177.52 : 984,180.40 = 390,907.68 : x
  2. Step 2: Convert to fraction form
    713,177.52/984,180.40 = 390,907.68/x
  3. Step 3: Cross multiply
    713,177.52x = 984,180.40 × 390,907.68
  4. Step 4: Simplify right side
    713,177.52x = 384,723,676,865.47
  5. Step 5: Solve for x
    x = 384,723,676,865.47/713,177.52
  6. Step 6: Final answer
    x = 539,450.09

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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.