Home / 918,682.80-1,378,024.20-664,772.10

Finding the Fourth Proportional to 918,682.80, 1,378,024.20 and 664,772.10

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Solution

The fourth proportional to 918,682.80, 1,378,024.20 and 664,772.10 is: 997,158.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,682.80 : 1,378,024.20 = 664,772.10 : x
  2. Step 2: Convert to fraction form
    918,682.80/1,378,024.20 = 664,772.10/x
  3. Step 3: Cross multiply
    918,682.80x = 1,378,024.20 × 664,772.10
  4. Step 4: Simplify right side
    918,682.80x = 916,072,041,284.82
  5. Step 5: Solve for x
    x = 916,072,041,284.82/918,682.80
  6. Step 6: Final answer
    x = 997,158.15

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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.