Home / 921,654-1,271,864.28-513,731.52

Finding the Fourth Proportional to 921,654, 1,271,864.28 and 513,731.52

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Solution

The fourth proportional to 921,654, 1,271,864.28 and 513,731.52 is: 708,939.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,654 : 1,271,864.28 = 513,731.52 : x
  2. Step 2: Convert to fraction form
    921,654/1,271,864.28 = 513,731.52/x
  3. Step 3: Cross multiply
    921,654x = 1,271,864.28 × 513,731.52
  4. Step 4: Simplify right side
    921,654x = 653,396,769,798.11
  5. Step 5: Solve for x
    x = 653,396,769,798.11/921,654
  6. Step 6: Final answer
    x = 708,939.33

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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.