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Finding the Fourth Proportional to 662,017.20, 993,436.20 and 346,700.40

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Solution

The fourth proportional to 662,017.20, 993,436.20 and 346,700.40 is: 520,265.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,017.20 : 993,436.20 = 346,700.40 : x
  2. Step 2: Convert to fraction form
    662,017.20/993,436.20 = 346,700.40/x
  3. Step 3: Cross multiply
    662,017.20x = 993,436.20 × 346,700.40
  4. Step 4: Simplify right side
    662,017.20x = 344,424,727,914.48
  5. Step 5: Solve for x
    x = 344,424,727,914.48/662,017.20
  6. Step 6: Final answer
    x = 520,265.53

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Double scale
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Similar ratio
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1.5x scale

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.