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Finding the Fourth Proportional to 627,347.28, 865,737.48 and 340,868.40

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Solution

The fourth proportional to 627,347.28, 865,737.48 and 340,868.40 is: 470,397.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,347.28 : 865,737.48 = 340,868.40 : x
  2. Step 2: Convert to fraction form
    627,347.28/865,737.48 = 340,868.40/x
  3. Step 3: Cross multiply
    627,347.28x = 865,737.48 × 340,868.40
  4. Step 4: Simplify right side
    627,347.28x = 295,102,549,627.63
  5. Step 5: Solve for x
    x = 295,102,549,627.63/627,347.28
  6. Step 6: Final answer
    x = 470,397.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.