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Finding the Fourth Proportional to 616,384.80, 926,132.40 and 391,852.80

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Solution

The fourth proportional to 616,384.80, 926,132.40 and 391,852.80 is: 588,767.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,384.80 : 926,132.40 = 391,852.80 : x
  2. Step 2: Convert to fraction form
    616,384.80/926,132.40 = 391,852.80/x
  3. Step 3: Cross multiply
    616,384.80x = 926,132.40 × 391,852.80
  4. Step 4: Simplify right side
    616,384.80x = 362,907,574,110.72
  5. Step 5: Solve for x
    x = 362,907,574,110.72/616,384.80
  6. Step 6: Final answer
    x = 588,767.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.