Home / 645,510.83-966,195.89-345,240.59

Finding the Fourth Proportional to 645,510.83, 966,195.89 and 345,240.59

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Solution

The fourth proportional to 645,510.83, 966,195.89 and 345,240.59 is: 516,753.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,510.83 : 966,195.89 = 345,240.59 : x
  2. Step 2: Convert to fraction form
    645,510.83/966,195.89 = 345,240.59/x
  3. Step 3: Cross multiply
    645,510.83x = 966,195.89 × 345,240.59
  4. Step 4: Simplify right side
    645,510.83x = 333,570,037,392.97
  5. Step 5: Solve for x
    x = 333,570,037,392.97/645,510.83
  6. Step 6: Final answer
    x = 516,753.59

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Double scale
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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.