Home / 921,230.79-1,271,266.14-513,311.55

Finding the Fourth Proportional to 921,230.79, 1,271,266.14 and 513,311.55

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Solution

The fourth proportional to 921,230.79, 1,271,266.14 and 513,311.55 is: 708,351.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,230.79 : 1,271,266.14 = 513,311.55 : x
  2. Step 2: Convert to fraction form
    921,230.79/1,271,266.14 = 513,311.55/x
  3. Step 3: Cross multiply
    921,230.79x = 1,271,266.14 × 513,311.55
  4. Step 4: Simplify right side
    921,230.79x = 652,555,592,785.92
  5. Step 5: Solve for x
    x = 652,555,592,785.92/921,230.79
  6. Step 6: Final answer
    x = 708,351.91

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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.