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Finding the Fourth Proportional to 662,607.20, 914,394.48 and 372,178.40

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Solution

The fourth proportional to 662,607.20, 914,394.48 and 372,178.40 is: 513,604.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,607.20 : 914,394.48 = 372,178.40 : x
  2. Step 2: Convert to fraction form
    662,607.20/914,394.48 = 372,178.40/x
  3. Step 3: Cross multiply
    662,607.20x = 914,394.48 × 372,178.40
  4. Step 4: Simplify right side
    662,607.20x = 340,317,874,535.23
  5. Step 5: Solve for x
    x = 340,317,874,535.23/662,607.20
  6. Step 6: Final answer
    x = 513,604.25

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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.