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Finding the Fourth Proportional to 12,798,569.60, 19,197,854.40 and 9,397,347.20

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Solution

The fourth proportional to 12,798,569.60, 19,197,854.40 and 9,397,347.20 is: 14,096,020.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,798,569.60 : 19,197,854.40 = 9,397,347.20 : x
  2. Step 2: Convert to fraction form
    12,798,569.60/19,197,854.40 = 9,397,347.20/x
  3. Step 3: Cross multiply
    12,798,569.60x = 19,197,854.40 × 9,397,347.20
  4. Step 4: Simplify right side
    12,798,569.60x = 180,408,903,291,847.66
  5. Step 5: Solve for x
    x = 180,408,903,291,847.66/12,798,569.60
  6. Step 6: Final answer
    x = 14,096,020.80

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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.