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Finding the Fourth Proportional to 718,087.48, 990,902.46 and 416,300.92

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Solution

The fourth proportional to 718,087.48, 990,902.46 and 416,300.92 is: 574,461.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,087.48 : 990,902.46 = 416,300.92 : x
  2. Step 2: Convert to fraction form
    718,087.48/990,902.46 = 416,300.92/x
  3. Step 3: Cross multiply
    718,087.48x = 990,902.46 × 416,300.92
  4. Step 4: Simplify right side
    718,087.48x = 412,513,605,728.26
  5. Step 5: Solve for x
    x = 412,513,605,728.26/718,087.48
  6. Step 6: Final answer
    x = 574,461.49

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.