Home / 918,000.20-1,377,000.30-669,168.20

Finding the Fourth Proportional to 918,000.20, 1,377,000.30 and 669,168.20

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Solution

The fourth proportional to 918,000.20, 1,377,000.30 and 669,168.20 is: 1,003,752.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,000.20 : 1,377,000.30 = 669,168.20 : x
  2. Step 2: Convert to fraction form
    918,000.20/1,377,000.30 = 669,168.20/x
  3. Step 3: Cross multiply
    918,000.20x = 1,377,000.30 × 669,168.20
  4. Step 4: Simplify right side
    918,000.20x = 921,444,812,150.46
  5. Step 5: Solve for x
    x = 921,444,812,150.46/918,000.20
  6. Step 6: Final answer
    x = 1,003,752.30

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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.