Home / 1,325,446.40-1,988,500.80-426,972.80

Finding the Fourth Proportional to 1,325,446.40, 1,988,500.80 and 426,972.80

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Solution

The fourth proportional to 1,325,446.40, 1,988,500.80 and 426,972.80 is: 640,565.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325,446.40 : 1,988,500.80 = 426,972.80 : x
  2. Step 2: Convert to fraction form
    1,325,446.40/1,988,500.80 = 426,972.80/x
  3. Step 3: Cross multiply
    1,325,446.40x = 1,988,500.80 × 426,972.80
  4. Step 4: Simplify right side
    1,325,446.40x = 849,035,754,378.24
  5. Step 5: Solve for x
    x = 849,035,754,378.24/1,325,446.40
  6. Step 6: Final answer
    x = 640,565.89

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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.