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Finding the Fourth Proportional to 447,488.73, 670,347.32 and 391,392.18

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Solution

The fourth proportional to 447,488.73, 670,347.32 and 391,392.18 is: 586,313.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,488.73 : 670,347.32 = 391,392.18 : x
  2. Step 2: Convert to fraction form
    447,488.73/670,347.32 = 391,392.18/x
  3. Step 3: Cross multiply
    447,488.73x = 670,347.32 × 391,392.18
  4. Step 4: Simplify right side
    447,488.73x = 262,368,696,975.00
  5. Step 5: Solve for x
    x = 262,368,696,975.00/447,488.73
  6. Step 6: Final answer
    x = 586,313.53

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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.