Home / 878,025.28-1,316,133.92-345,330.40

Finding the Fourth Proportional to 878,025.28, 1,316,133.92 and 345,330.40

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Solution

The fourth proportional to 878,025.28, 1,316,133.92 and 345,330.40 is: 517,640.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,025.28 : 1,316,133.92 = 345,330.40 : x
  2. Step 2: Convert to fraction form
    878,025.28/1,316,133.92 = 345,330.40/x
  3. Step 3: Cross multiply
    878,025.28x = 1,316,133.92 × 345,330.40
  4. Step 4: Simplify right side
    878,025.28x = 454,501,053,047.17
  5. Step 5: Solve for x
    x = 454,501,053,047.17/878,025.28
  6. Step 6: Final answer
    x = 517,640.05

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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.