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Finding the Fourth Proportional to 900,894.92, 1,243,217.46 and 498,486.92

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Solution

The fourth proportional to 900,894.92, 1,243,217.46 and 498,486.92 is: 687,902.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,894.92 : 1,243,217.46 = 498,486.92 : x
  2. Step 2: Convert to fraction form
    900,894.92/1,243,217.46 = 498,486.92/x
  3. Step 3: Cross multiply
    900,894.92x = 1,243,217.46 × 498,486.92
  4. Step 4: Simplify right side
    900,894.92x = 619,727,642,525.62
  5. Step 5: Solve for x
    x = 619,727,642,525.62/900,894.92
  6. Step 6: Final answer
    x = 687,902.25

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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.