Home / 724,999.40-1,087,887.90-304,317.80

Finding the Fourth Proportional to 724,999.40, 1,087,887.90 and 304,317.80

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Solution

The fourth proportional to 724,999.40, 1,087,887.90 and 304,317.80 is: 456,639.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,999.40 : 1,087,887.90 = 304,317.80 : x
  2. Step 2: Convert to fraction form
    724,999.40/1,087,887.90 = 304,317.80/x
  3. Step 3: Cross multiply
    724,999.40x = 1,087,887.90 × 304,317.80
  4. Step 4: Simplify right side
    724,999.40x = 331,063,652,374.62
  5. Step 5: Solve for x
    x = 331,063,652,374.62/724,999.40
  6. Step 6: Final answer
    x = 456,639.90

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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.