Home / 921,426.30-1,271,548.80-513,565.38

Finding the Fourth Proportional to 921,426.30, 1,271,548.80 and 513,565.38

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Solution

The fourth proportional to 921,426.30, 1,271,548.80 and 513,565.38 is: 708,709.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,426.30 : 1,271,548.80 = 513,565.38 : x
  2. Step 2: Convert to fraction form
    921,426.30/1,271,548.80 = 513,565.38/x
  3. Step 3: Cross multiply
    921,426.30x = 1,271,548.80 × 513,565.38
  4. Step 4: Simplify right side
    921,426.30x = 653,023,442,660.54
  5. Step 5: Solve for x
    x = 653,023,442,660.54/921,426.30
  6. Step 6: Final answer
    x = 708,709.36

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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.