Home / 985,998.80-1,478,134.20-669,429.20

Finding the Fourth Proportional to 985,998.80, 1,478,134.20 and 669,429.20

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Solution

The fourth proportional to 985,998.80, 1,478,134.20 and 669,429.20 is: 1,003,557.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,998.80 : 1,478,134.20 = 669,429.20 : x
  2. Step 2: Convert to fraction form
    985,998.80/1,478,134.20 = 669,429.20/x
  3. Step 3: Cross multiply
    985,998.80x = 1,478,134.20 × 669,429.20
  4. Step 4: Simplify right side
    985,998.80x = 989,506,194,998.64
  5. Step 5: Solve for x
    x = 989,506,194,998.64/985,998.80
  6. Step 6: Final answer
    x = 1,003,557.20

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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.