Home / 639,947.79-959,550.35-302,985.61

Finding the Fourth Proportional to 639,947.79, 959,550.35 and 302,985.61

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Solution

The fourth proportional to 639,947.79, 959,550.35 and 302,985.61 is: 454,302.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,947.79 : 959,550.35 = 302,985.61 : x
  2. Step 2: Convert to fraction form
    639,947.79/959,550.35 = 302,985.61/x
  3. Step 3: Cross multiply
    639,947.79x = 959,550.35 × 302,985.61
  4. Step 4: Simplify right side
    639,947.79x = 290,729,951,308.42
  5. Step 5: Solve for x
    x = 290,729,951,308.42/639,947.79
  6. Step 6: Final answer
    x = 454,302.61

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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.