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Finding the Fourth Proportional to 704,805.72, 972,631.86 and 382,515.84

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Solution

The fourth proportional to 704,805.72, 972,631.86 and 382,515.84 is: 527,871.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,805.72 : 972,631.86 = 382,515.84 : x
  2. Step 2: Convert to fraction form
    704,805.72/972,631.86 = 382,515.84/x
  3. Step 3: Cross multiply
    704,805.72x = 972,631.86 × 382,515.84
  4. Step 4: Simplify right side
    704,805.72x = 372,047,092,938.66
  5. Step 5: Solve for x
    x = 372,047,092,938.66/704,805.72
  6. Step 6: Final answer
    x = 527,871.84

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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.