Home / 638,000.20-956,456.70-282,820.60

Finding the Fourth Proportional to 638,000.20, 956,456.70 and 282,820.60

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Solution

The fourth proportional to 638,000.20, 956,456.70 and 282,820.60 is: 423,989.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,000.20 : 956,456.70 = 282,820.60 : x
  2. Step 2: Convert to fraction form
    638,000.20/956,456.70 = 282,820.60/x
  3. Step 3: Cross multiply
    638,000.20x = 956,456.70 × 282,820.60
  4. Step 4: Simplify right side
    638,000.20x = 270,505,657,768.02
  5. Step 5: Solve for x
    x = 270,505,657,768.02/638,000.20
  6. Step 6: Final answer
    x = 423,989.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.