Home / 928,149.36-1,280,924.46-520,244.70

Finding the Fourth Proportional to 928,149.36, 1,280,924.46 and 520,244.70

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Solution

The fourth proportional to 928,149.36, 1,280,924.46 and 520,244.70 is: 717,981.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,149.36 : 1,280,924.46 = 520,244.70 : x
  2. Step 2: Convert to fraction form
    928,149.36/1,280,924.46 = 520,244.70/x
  3. Step 3: Cross multiply
    928,149.36x = 1,280,924.46 × 520,244.70
  4. Step 4: Simplify right side
    928,149.36x = 666,394,161,415.36
  5. Step 5: Solve for x
    x = 666,394,161,415.36/928,149.36
  6. Step 6: Final answer
    x = 717,981.60

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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.