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Finding the Fourth Proportional to 615,126.40, 922,689.60 and 455,694.10

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Solution

The fourth proportional to 615,126.40, 922,689.60 and 455,694.10 is: 683,541.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,126.40 : 922,689.60 = 455,694.10 : x
  2. Step 2: Convert to fraction form
    615,126.40/922,689.60 = 455,694.10/x
  3. Step 3: Cross multiply
    615,126.40x = 922,689.60 × 455,694.10
  4. Step 4: Simplify right side
    615,126.40x = 420,464,206,851.36
  5. Step 5: Solve for x
    x = 420,464,206,851.36/615,126.40
  6. Step 6: Final answer
    x = 683,541.15

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Similar ratio
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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.