Home / 12,128,545.60-18,192,818.40-3,607,774.90

Finding the Fourth Proportional to 12,128,545.60, 18,192,818.40 and 3,607,774.90

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Solution

The fourth proportional to 12,128,545.60, 18,192,818.40 and 3,607,774.90 is: 5,411,662.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128,545.60 : 18,192,818.40 = 3,607,774.90 : x
  2. Step 2: Convert to fraction form
    12,128,545.60/18,192,818.40 = 3,607,774.90/x
  3. Step 3: Cross multiply
    12,128,545.60x = 18,192,818.40 × 3,607,774.90
  4. Step 4: Simplify right side
    12,128,545.60x = 65,635,593,583,778.16
  5. Step 5: Solve for x
    x = 65,635,593,583,778.16/12,128,545.60
  6. Step 6: Final answer
    x = 5,411,662.35

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1.5x scale

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.