Home / 739,512.32-1,020,524.64-399,980.48

Finding the Fourth Proportional to 739,512.32, 1,020,524.64 and 399,980.48

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Solution

The fourth proportional to 739,512.32, 1,020,524.64 and 399,980.48 is: 551,971.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,512.32 : 1,020,524.64 = 399,980.48 : x
  2. Step 2: Convert to fraction form
    739,512.32/1,020,524.64 = 399,980.48/x
  3. Step 3: Cross multiply
    739,512.32x = 1,020,524.64 × 399,980.48
  4. Step 4: Simplify right side
    739,512.32x = 408,189,935,359.03
  5. Step 5: Solve for x
    x = 408,189,935,359.03/739,512.32
  6. Step 6: Final answer
    x = 551,971.79

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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.