Home / 739,503.64-1,020,515.10-399,971.88

Finding the Fourth Proportional to 739,503.64, 1,020,515.10 and 399,971.88

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Solution

The fourth proportional to 739,503.64, 1,020,515.10 and 399,971.88 is: 551,961.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,503.64 : 1,020,515.10 = 399,971.88 : x
  2. Step 2: Convert to fraction form
    739,503.64/1,020,515.10 = 399,971.88/x
  3. Step 3: Cross multiply
    739,503.64x = 1,020,515.10 × 399,971.88
  4. Step 4: Simplify right side
    739,503.64x = 408,177,343,115.39
  5. Step 5: Solve for x
    x = 408,177,343,115.39/739,503.64
  6. Step 6: Final answer
    x = 551,961.24

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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.