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Finding the Fourth Proportional to 900,565.56, 1,242,783 and 498,157.56

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Solution

The fourth proportional to 900,565.56, 1,242,783 and 498,157.56 is: 687,458.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,565.56 : 1,242,783 = 498,157.56 : x
  2. Step 2: Convert to fraction form
    900,565.56/1,242,783 = 498,157.56/x
  3. Step 3: Cross multiply
    900,565.56x = 1,242,783 × 498,157.56
  4. Step 4: Simplify right side
    900,565.56x = 619,101,746,889.48
  5. Step 5: Solve for x
    x = 619,101,746,889.48/900,565.56
  6. Step 6: Final answer
    x = 687,458.83

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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.