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Finding the Fourth Proportional to 615,123.60, 922,685.40 and 283,347.60

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Solution

The fourth proportional to 615,123.60, 922,685.40 and 283,347.60 is: 425,021.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,123.60 : 922,685.40 = 283,347.60 : x
  2. Step 2: Convert to fraction form
    615,123.60/922,685.40 = 283,347.60/x
  3. Step 3: Cross multiply
    615,123.60x = 922,685.40 × 283,347.60
  4. Step 4: Simplify right side
    615,123.60x = 261,440,693,645.04
  5. Step 5: Solve for x
    x = 261,440,693,645.04/615,123.60
  6. Step 6: Final answer
    x = 425,021.40

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Similar ratio
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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.