Home / 921,635.42-1,271,838.68-513,712.94

Finding the Fourth Proportional to 921,635.42, 1,271,838.68 and 513,712.94

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Solution

The fourth proportional to 921,635.42, 1,271,838.68 and 513,712.94 is: 708,913.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,635.42 : 1,271,838.68 = 513,712.94 : x
  2. Step 2: Convert to fraction form
    921,635.42/1,271,838.68 = 513,712.94/x
  3. Step 3: Cross multiply
    921,635.42x = 1,271,838.68 × 513,712.94
  4. Step 4: Simplify right side
    921,635.42x = 653,359,985,276.58
  5. Step 5: Solve for x
    x = 653,359,985,276.58/921,635.42
  6. Step 6: Final answer
    x = 708,913.71

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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.