Home / 928,150.40-1,280,906.75-520,252.35

Finding the Fourth Proportional to 928,150.40, 1,280,906.75 and 520,252.35

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Solution

The fourth proportional to 928,150.40, 1,280,906.75 and 520,252.35 is: 717,981.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,150.40 : 1,280,906.75 = 520,252.35 : x
  2. Step 2: Convert to fraction form
    928,150.40/1,280,906.75 = 520,252.35/x
  3. Step 3: Cross multiply
    928,150.40x = 1,280,906.75 × 520,252.35
  4. Step 4: Simplify right side
    928,150.40x = 666,394,746,818.36
  5. Step 5: Solve for x
    x = 666,394,746,818.36/928,150.40
  6. Step 6: Final answer
    x = 717,981.43

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Double scale
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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.