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Finding the Fourth Proportional to 649,570.79, 974,071.87 and 345,900.98

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Solution

The fourth proportional to 649,570.79, 974,071.87 and 345,900.98 is: 518,700.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,570.79 : 974,071.87 = 345,900.98 : x
  2. Step 2: Convert to fraction form
    649,570.79/974,071.87 = 345,900.98/x
  3. Step 3: Cross multiply
    649,570.79x = 974,071.87 × 345,900.98
  4. Step 4: Simplify right side
    649,570.79x = 336,932,414,423.43
  5. Step 5: Solve for x
    x = 336,932,414,423.43/649,570.79
  6. Step 6: Final answer
    x = 518,700.07

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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.