Home / 921,493.60-1,271,667.12-513,621.35

Finding the Fourth Proportional to 921,493.60, 1,271,667.12 and 513,621.35

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Solution

The fourth proportional to 921,493.60, 1,271,667.12 and 513,621.35 is: 708,800.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,493.60 : 1,271,667.12 = 513,621.35 : x
  2. Step 2: Convert to fraction form
    921,493.60/1,271,667.12 = 513,621.35/x
  3. Step 3: Cross multiply
    921,493.60x = 1,271,667.12 × 513,621.35
  4. Step 4: Simplify right side
    921,493.60x = 653,155,380,346.45
  5. Step 5: Solve for x
    x = 653,155,380,346.45/921,493.60
  6. Step 6: Final answer
    x = 708,800.78

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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.