Home / 683,143.32-942,820.90-396,663.40

Finding the Fourth Proportional to 683,143.32, 942,820.90 and 396,663.40

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Solution

The fourth proportional to 683,143.32, 942,820.90 and 396,663.40 is: 547,443.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,143.32 : 942,820.90 = 396,663.40 : x
  2. Step 2: Convert to fraction form
    683,143.32/942,820.90 = 396,663.40/x
  3. Step 3: Cross multiply
    683,143.32x = 942,820.90 × 396,663.40
  4. Step 4: Simplify right side
    683,143.32x = 373,982,545,150.45
  5. Step 5: Solve for x
    x = 373,982,545,150.45/683,143.32
  6. Step 6: Final answer
    x = 547,443.76

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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.