Home / 928,662.45-1,281,534.20-520,755.35

Finding the Fourth Proportional to 928,662.45, 1,281,534.20 and 520,755.35

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Solution

The fourth proportional to 928,662.45, 1,281,534.20 and 520,755.35 is: 718,631.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,662.45 : 1,281,534.20 = 520,755.35 : x
  2. Step 2: Convert to fraction form
    928,662.45/1,281,534.20 = 520,755.35/x
  3. Step 3: Cross multiply
    928,662.45x = 1,281,534.20 × 520,755.35
  4. Step 4: Simplify right side
    928,662.45x = 667,365,781,846.52
  5. Step 5: Solve for x
    x = 667,365,781,846.52/928,662.45
  6. Step 6: Final answer
    x = 718,631.17

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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.