Home / 688,389.30-949,998.38-416,507.13

Finding the Fourth Proportional to 688,389.30, 949,998.38 and 416,507.13

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Solution

The fourth proportional to 688,389.30, 949,998.38 and 416,507.13 is: 574,792.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,389.30 : 949,998.38 = 416,507.13 : x
  2. Step 2: Convert to fraction form
    688,389.30/949,998.38 = 416,507.13/x
  3. Step 3: Cross multiply
    688,389.30x = 949,998.38 × 416,507.13
  4. Step 4: Simplify right side
    688,389.30x = 395,681,096,675.91
  5. Step 5: Solve for x
    x = 395,681,096,675.91/688,389.30
  6. Step 6: Final answer
    x = 574,792.63

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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.