Home / 12,787,419.60-19,156,246.20-7,723,688.40

Finding the Fourth Proportional to 12,787,419.60, 19,156,246.20 and 7,723,688.40

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Solution

The fourth proportional to 12,787,419.60, 19,156,246.20 and 7,723,688.40 is: 11,570,502.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,787,419.60 : 19,156,246.20 = 7,723,688.40 : x
  2. Step 2: Convert to fraction form
    12,787,419.60/19,156,246.20 = 7,723,688.40/x
  3. Step 3: Cross multiply
    12,787,419.60x = 19,156,246.20 × 7,723,688.40
  4. Step 4: Simplify right side
    12,787,419.60x = 147,956,876,562,484.09
  5. Step 5: Solve for x
    x = 147,956,876,562,484.09/12,787,419.60
  6. Step 6: Final answer
    x = 11,570,502.98

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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.