Home / 921,426.80-1,271,549.49-513,565.88

Finding the Fourth Proportional to 921,426.80, 1,271,549.49 and 513,565.88

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Solution

The fourth proportional to 921,426.80, 1,271,549.49 and 513,565.88 is: 708,710.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,426.80 : 1,271,549.49 = 513,565.88 : x
  2. Step 2: Convert to fraction form
    921,426.80/1,271,549.49 = 513,565.88/x
  3. Step 3: Cross multiply
    921,426.80x = 1,271,549.49 × 513,565.88
  4. Step 4: Simplify right side
    921,426.80x = 653,024,432,795.40
  5. Step 5: Solve for x
    x = 653,024,432,795.40/921,426.80
  6. Step 6: Final answer
    x = 708,710.05

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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.