Home / 739,179.30-1,020,066.57-399,646.74

Finding the Fourth Proportional to 739,179.30, 1,020,066.57 and 399,646.74

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Solution

The fourth proportional to 739,179.30, 1,020,066.57 and 399,646.74 is: 551,512.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,179.30 : 1,020,066.57 = 399,646.74 : x
  2. Step 2: Convert to fraction form
    739,179.30/1,020,066.57 = 399,646.74/x
  3. Step 3: Cross multiply
    739,179.30x = 1,020,066.57 × 399,646.74
  4. Step 4: Simplify right side
    739,179.30x = 407,666,279,283.48
  5. Step 5: Solve for x
    x = 407,666,279,283.48/739,179.30
  6. Step 6: Final answer
    x = 551,512.03

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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.