Home / 739,451.46-1,020,443.02-399,919.71

Finding the Fourth Proportional to 739,451.46, 1,020,443.02 and 399,919.71

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Solution

The fourth proportional to 739,451.46, 1,020,443.02 and 399,919.71 is: 551,889.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,451.46 : 1,020,443.02 = 399,919.71 : x
  2. Step 2: Convert to fraction form
    739,451.46/1,020,443.02 = 399,919.71/x
  3. Step 3: Cross multiply
    739,451.46x = 1,020,443.02 × 399,919.71
  4. Step 4: Simplify right side
    739,451.46x = 408,095,276,629.92
  5. Step 5: Solve for x
    x = 408,095,276,629.92/739,451.46
  6. Step 6: Final answer
    x = 551,889.20

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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.