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Finding the Fourth Proportional to 991,713.16, 1,487,597.82 and 243,757

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Solution

The fourth proportional to 991,713.16, 1,487,597.82 and 243,757 is: 365,642.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,713.16 : 1,487,597.82 = 243,757 : x
  2. Step 2: Convert to fraction form
    991,713.16/1,487,597.82 = 243,757/x
  3. Step 3: Cross multiply
    991,713.16x = 1,487,597.82 × 243,757
  4. Step 4: Simplify right side
    991,713.16x = 362,612,381,809.74
  5. Step 5: Solve for x
    x = 362,612,381,809.74/991,713.16
  6. Step 6: Final answer
    x = 365,642.40

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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.