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Finding the Fourth Proportional to 578,436.72, 868,987.08 and 410,374.32

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Solution

The fourth proportional to 578,436.72, 868,987.08 and 410,374.32 is: 616,506.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,436.72 : 868,987.08 = 410,374.32 : x
  2. Step 2: Convert to fraction form
    578,436.72/868,987.08 = 410,374.32/x
  3. Step 3: Cross multiply
    578,436.72x = 868,987.08 × 410,374.32
  4. Step 4: Simplify right side
    578,436.72x = 356,609,982,043.79
  5. Step 5: Solve for x
    x = 356,609,982,043.79/578,436.72
  6. Step 6: Final answer
    x = 616,506.47

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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.