Home / 690,943.10-953,706.76-436,463.78

Finding the Fourth Proportional to 690,943.10, 953,706.76 and 436,463.78

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Solution

The fourth proportional to 690,943.10, 953,706.76 and 436,463.78 is: 602,449.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,943.10 : 953,706.76 = 436,463.78 : x
  2. Step 2: Convert to fraction form
    690,943.10/953,706.76 = 436,463.78/x
  3. Step 3: Cross multiply
    690,943.10x = 953,706.76 × 436,463.78
  4. Step 4: Simplify right side
    690,943.10x = 416,258,451,621.46
  5. Step 5: Solve for x
    x = 416,258,451,621.46/690,943.10
  6. Step 6: Final answer
    x = 602,449.69

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Double scale
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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.