Home / 739,178.80-1,020,065.88-399,646.24

Finding the Fourth Proportional to 739,178.80, 1,020,065.88 and 399,646.24

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Solution

The fourth proportional to 739,178.80, 1,020,065.88 and 399,646.24 is: 551,511.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,178.80 : 1,020,065.88 = 399,646.24 : x
  2. Step 2: Convert to fraction form
    739,178.80/1,020,065.88 = 399,646.24/x
  3. Step 3: Cross multiply
    739,178.80x = 1,020,065.88 × 399,646.24
  4. Step 4: Simplify right side
    739,178.80x = 407,665,493,494.29
  5. Step 5: Solve for x
    x = 407,665,493,494.29/739,178.80
  6. Step 6: Final answer
    x = 551,511.34

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Double scale
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Similar ratio
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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.