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Finding the Fourth Proportional to 522,078.70, 781,368.45 and 459,093.10

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Solution

The fourth proportional to 522,078.70, 781,368.45 and 459,093.10 is: 687,101.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,078.70 : 781,368.45 = 459,093.10 : x
  2. Step 2: Convert to fraction form
    522,078.70/781,368.45 = 459,093.10/x
  3. Step 3: Cross multiply
    522,078.70x = 781,368.45 × 459,093.10
  4. Step 4: Simplify right side
    522,078.70x = 358,720,863,952.70
  5. Step 5: Solve for x
    x = 358,720,863,952.70/522,078.70
  6. Step 6: Final answer
    x = 687,101.13

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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.