Home / 12,712,378.40-19,061,569.20-4,188,327.20

Finding the Fourth Proportional to 12,712,378.40, 19,061,569.20 and 4,188,327.20

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Solution

The fourth proportional to 12,712,378.40, 19,061,569.20 and 4,188,327.20 is: 6,280,185.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,712,378.40 : 19,061,569.20 = 4,188,327.20 : x
  2. Step 2: Convert to fraction form
    12,712,378.40/19,061,569.20 = 4,188,327.20/x
  3. Step 3: Cross multiply
    12,712,378.40x = 19,061,569.20 × 4,188,327.20
  4. Step 4: Simplify right side
    12,712,378.40x = 79,836,088,755,042.23
  5. Step 5: Solve for x
    x = 79,836,088,755,042.23/12,712,378.40
  6. Step 6: Final answer
    x = 6,280,185.05

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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.