Home / 639,211.40-959,162.70-284,280.20

Finding the Fourth Proportional to 639,211.40, 959,162.70 and 284,280.20

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Solution

The fourth proportional to 639,211.40, 959,162.70 and 284,280.20 is: 426,574.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,211.40 : 959,162.70 = 284,280.20 : x
  2. Step 2: Convert to fraction form
    639,211.40/959,162.70 = 284,280.20/x
  3. Step 3: Cross multiply
    639,211.40x = 959,162.70 × 284,280.20
  4. Step 4: Simplify right side
    639,211.40x = 272,670,964,188.54
  5. Step 5: Solve for x
    x = 272,670,964,188.54/639,211.40
  6. Step 6: Final answer
    x = 426,574.00

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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.