Home / 719,139.78-992,433.06-396,870.24

Finding the Fourth Proportional to 719,139.78, 992,433.06 and 396,870.24

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Solution

The fourth proportional to 719,139.78, 992,433.06 and 396,870.24 is: 547,692.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,139.78 : 992,433.06 = 396,870.24 : x
  2. Step 2: Convert to fraction form
    719,139.78/992,433.06 = 396,870.24/x
  3. Step 3: Cross multiply
    719,139.78x = 992,433.06 × 396,870.24
  4. Step 4: Simplify right side
    719,139.78x = 393,867,146,706.13
  5. Step 5: Solve for x
    x = 393,867,146,706.13/719,139.78
  6. Step 6: Final answer
    x = 547,692.06

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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.