Home / 678,650.80-1,017,976.20-662,904.40

Finding the Fourth Proportional to 678,650.80, 1,017,976.20 and 662,904.40

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Solution

The fourth proportional to 678,650.80, 1,017,976.20 and 662,904.40 is: 994,356.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,650.80 : 1,017,976.20 = 662,904.40 : x
  2. Step 2: Convert to fraction form
    678,650.80/1,017,976.20 = 662,904.40/x
  3. Step 3: Cross multiply
    678,650.80x = 1,017,976.20 × 662,904.40
  4. Step 4: Simplify right side
    678,650.80x = 674,820,902,075.28
  5. Step 5: Solve for x
    x = 674,820,902,075.28/678,650.80
  6. Step 6: Final answer
    x = 994,356.60

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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.