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Finding the Fourth Proportional to 662,625.80, 993,938.70 and 307,521.80

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Solution

The fourth proportional to 662,625.80, 993,938.70 and 307,521.80 is: 461,282.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,625.80 : 993,938.70 = 307,521.80 : x
  2. Step 2: Convert to fraction form
    662,625.80/993,938.70 = 307,521.80/x
  3. Step 3: Cross multiply
    662,625.80x = 993,938.70 × 307,521.80
  4. Step 4: Simplify right side
    662,625.80x = 305,657,818,113.66
  5. Step 5: Solve for x
    x = 305,657,818,113.66/662,625.80
  6. Step 6: Final answer
    x = 461,282.70

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Similar ratio
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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.