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Finding the Fourth Proportional to 867,620.90, 1,197,329.07 and 499,894.81

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Solution

The fourth proportional to 867,620.90, 1,197,329.07 and 499,894.81 is: 689,861.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,620.90 : 1,197,329.07 = 499,894.81 : x
  2. Step 2: Convert to fraction form
    867,620.90/1,197,329.07 = 499,894.81/x
  3. Step 3: Cross multiply
    867,620.90x = 1,197,329.07 × 499,894.81
  4. Step 4: Simplify right side
    867,620.90x = 598,538,586,836.41
  5. Step 5: Solve for x
    x = 598,538,586,836.41/867,620.90
  6. Step 6: Final answer
    x = 689,861.88

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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.