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Finding the Fourth Proportional to 642,215.20, 963,322.80 and 602,849.20

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Solution

The fourth proportional to 642,215.20, 963,322.80 and 602,849.20 is: 904,273.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,215.20 : 963,322.80 = 602,849.20 : x
  2. Step 2: Convert to fraction form
    642,215.20/963,322.80 = 602,849.20/x
  3. Step 3: Cross multiply
    642,215.20x = 963,322.80 × 602,849.20
  4. Step 4: Simplify right side
    642,215.20x = 580,738,379,321.76
  5. Step 5: Solve for x
    x = 580,738,379,321.76/642,215.20
  6. Step 6: Final answer
    x = 904,273.80

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1.5x scale

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.