Home / 688,640.10-1,032,960.15-476,063.70

Finding the Fourth Proportional to 688,640.10, 1,032,960.15 and 476,063.70

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Solution

The fourth proportional to 688,640.10, 1,032,960.15 and 476,063.70 is: 714,095.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,640.10 : 1,032,960.15 = 476,063.70 : x
  2. Step 2: Convert to fraction form
    688,640.10/1,032,960.15 = 476,063.70/x
  3. Step 3: Cross multiply
    688,640.10x = 1,032,960.15 × 476,063.70
  4. Step 4: Simplify right side
    688,640.10x = 491,754,830,961.56
  5. Step 5: Solve for x
    x = 491,754,830,961.56/688,640.10
  6. Step 6: Final answer
    x = 714,095.55

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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.