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Finding the Fourth Proportional to 615,087.40, 922,631.10 and 517,109.80

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Solution

The fourth proportional to 615,087.40, 922,631.10 and 517,109.80 is: 775,664.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,087.40 : 922,631.10 = 517,109.80 : x
  2. Step 2: Convert to fraction form
    615,087.40/922,631.10 = 517,109.80/x
  3. Step 3: Cross multiply
    615,087.40x = 922,631.10 × 517,109.80
  4. Step 4: Simplify right side
    615,087.40x = 477,101,583,594.78
  5. Step 5: Solve for x
    x = 477,101,583,594.78/615,087.40
  6. Step 6: Final answer
    x = 775,664.70

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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.