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Finding the Fourth Proportional to 636,657.79, 878,588.19 and 350,199.67

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Solution

The fourth proportional to 636,657.79, 878,588.19 and 350,199.67 is: 483,275.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,657.79 : 878,588.19 = 350,199.67 : x
  2. Step 2: Convert to fraction form
    636,657.79/878,588.19 = 350,199.67/x
  3. Step 3: Cross multiply
    636,657.79x = 878,588.19 × 350,199.67
  4. Step 4: Simplify right side
    636,657.79x = 307,681,290,686.46
  5. Step 5: Solve for x
    x = 307,681,290,686.46/636,657.79
  6. Step 6: Final answer
    x = 483,275.78

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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.