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Finding the Fourth Proportional to 660,702.80, 991,054.20 and 650,205.20

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Solution

The fourth proportional to 660,702.80, 991,054.20 and 650,205.20 is: 975,307.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,702.80 : 991,054.20 = 650,205.20 : x
  2. Step 2: Convert to fraction form
    660,702.80/991,054.20 = 650,205.20/x
  3. Step 3: Cross multiply
    660,702.80x = 991,054.20 × 650,205.20
  4. Step 4: Simplify right side
    660,702.80x = 644,388,594,321.84
  5. Step 5: Solve for x
    x = 644,388,594,321.84/660,702.80
  6. Step 6: Final answer
    x = 975,307.80

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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.