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Finding the Fourth Proportional to 660,303.28, 991,020.48 and 655,333.12

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Solution

The fourth proportional to 660,303.28, 991,020.48 and 655,333.12 is: 983,560.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,303.28 : 991,020.48 = 655,333.12 : x
  2. Step 2: Convert to fraction form
    660,303.28/991,020.48 = 655,333.12/x
  3. Step 3: Cross multiply
    660,303.28x = 991,020.48 × 655,333.12
  4. Step 4: Simplify right side
    660,303.28x = 649,448,543,142.30
  5. Step 5: Solve for x
    x = 649,448,543,142.30/660,303.28
  6. Step 6: Final answer
    x = 983,560.98

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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.