Home / 1,005,312.80-1,508,187.90-331,279.40

Finding the Fourth Proportional to 1,005,312.80, 1,508,187.90 and 331,279.40

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Solution

The fourth proportional to 1,005,312.80, 1,508,187.90 and 331,279.40 is: 496,991.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,005,312.80 : 1,508,187.90 = 331,279.40 : x
  2. Step 2: Convert to fraction form
    1,005,312.80/1,508,187.90 = 331,279.40/x
  3. Step 3: Cross multiply
    1,005,312.80x = 1,508,187.90 × 331,279.40
  4. Step 4: Simplify right side
    1,005,312.80x = 499,631,582,599.26
  5. Step 5: Solve for x
    x = 499,631,582,599.26/1,005,312.80
  6. Step 6: Final answer
    x = 496,991.17

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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.