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Finding the Fourth Proportional to 573,751.12, 858,944.31 and 402,378.88

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Solution

The fourth proportional to 573,751.12, 858,944.31 and 402,378.88 is: 602,388.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,751.12 : 858,944.31 = 402,378.88 : x
  2. Step 2: Convert to fraction form
    573,751.12/858,944.31 = 402,378.88/x
  3. Step 3: Cross multiply
    573,751.12x = 858,944.31 × 402,378.88
  4. Step 4: Simplify right side
    573,751.12x = 345,621,049,440.17
  5. Step 5: Solve for x
    x = 345,621,049,440.17/573,751.12
  6. Step 6: Final answer
    x = 602,388.45

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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.