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Finding the Fourth Proportional to 644,780.68, 967,487.82 and 290,045.32

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Solution

The fourth proportional to 644,780.68, 967,487.82 and 290,045.32 is: 435,210.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,780.68 : 967,487.82 = 290,045.32 : x
  2. Step 2: Convert to fraction form
    644,780.68/967,487.82 = 290,045.32/x
  3. Step 3: Cross multiply
    644,780.68x = 967,487.82 × 290,045.32
  4. Step 4: Simplify right side
    644,780.68x = 280,615,314,348.00
  5. Step 5: Solve for x
    x = 280,615,314,348.00/644,780.68
  6. Step 6: Final answer
    x = 435,210.49

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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.