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Finding the Fourth Proportional to 615,187.10, 922,780.65 and 556,138.10

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Solution

The fourth proportional to 615,187.10, 922,780.65 and 556,138.10 is: 834,207.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,187.10 : 922,780.65 = 556,138.10 : x
  2. Step 2: Convert to fraction form
    615,187.10/922,780.65 = 556,138.10/x
  3. Step 3: Cross multiply
    615,187.10x = 922,780.65 × 556,138.10
  4. Step 4: Simplify right side
    615,187.10x = 513,193,477,407.77
  5. Step 5: Solve for x
    x = 513,193,477,407.77/615,187.10
  6. Step 6: Final answer
    x = 834,207.15

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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.