Home / 449,312.85-620,000.73-258,387.75

Finding the Fourth Proportional to 449,312.85, 620,000.73 and 258,387.75

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Solution

The fourth proportional to 449,312.85, 620,000.73 and 258,387.75 is: 356,545.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,312.85 : 620,000.73 = 258,387.75 : x
  2. Step 2: Convert to fraction form
    449,312.85/620,000.73 = 258,387.75/x
  3. Step 3: Cross multiply
    449,312.85x = 620,000.73 × 258,387.75
  4. Step 4: Simplify right side
    449,312.85x = 160,200,593,623.06
  5. Step 5: Solve for x
    x = 160,200,593,623.06/449,312.85
  6. Step 6: Final answer
    x = 356,545.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.