Home / 739,966.05-1,021,153.11-400,434.30

Finding the Fourth Proportional to 739,966.05, 1,021,153.11 and 400,434.30

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Solution

The fourth proportional to 739,966.05, 1,021,153.11 and 400,434.30 is: 552,599.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,966.05 : 1,021,153.11 = 400,434.30 : x
  2. Step 2: Convert to fraction form
    739,966.05/1,021,153.11 = 400,434.30/x
  3. Step 3: Cross multiply
    739,966.05x = 1,021,153.11 × 400,434.30
  4. Step 4: Simplify right side
    739,966.05x = 408,904,730,795.67
  5. Step 5: Solve for x
    x = 408,904,730,795.67/739,966.05
  6. Step 6: Final answer
    x = 552,599.31

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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.