Home / 917,686.80-1,376,530.20-412,489.80

Finding the Fourth Proportional to 917,686.80, 1,376,530.20 and 412,489.80

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Solution

The fourth proportional to 917,686.80, 1,376,530.20 and 412,489.80 is: 618,734.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,686.80 : 1,376,530.20 = 412,489.80 : x
  2. Step 2: Convert to fraction form
    917,686.80/1,376,530.20 = 412,489.80/x
  3. Step 3: Cross multiply
    917,686.80x = 1,376,530.20 × 412,489.80
  4. Step 4: Simplify right side
    917,686.80x = 567,804,666,891.96
  5. Step 5: Solve for x
    x = 567,804,666,891.96/917,686.80
  6. Step 6: Final answer
    x = 618,734.70

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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.