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Finding the Fourth Proportional to 12,498,152.40, 18,748,265.40 and 3,978,248.40

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Solution

The fourth proportional to 12,498,152.40, 18,748,265.40 and 3,978,248.40 is: 5,967,702.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,498,152.40 : 18,748,265.40 = 3,978,248.40 : x
  2. Step 2: Convert to fraction form
    12,498,152.40/18,748,265.40 = 3,978,248.40/x
  3. Step 3: Cross multiply
    12,498,152.40x = 18,748,265.40 × 3,978,248.40
  4. Step 4: Simplify right side
    12,498,152.40x = 74,585,256,830,325.36
  5. Step 5: Solve for x
    x = 74,585,256,830,325.36/12,498,152.40
  6. Step 6: Final answer
    x = 5,967,702.62

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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.