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Finding the Fourth Proportional to 539,037.40, 807,681.30 and 338,999.80

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Solution

The fourth proportional to 539,037.40, 807,681.30 and 338,999.80 is: 507,949.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,037.40 : 807,681.30 = 338,999.80 : x
  2. Step 2: Convert to fraction form
    539,037.40/807,681.30 = 338,999.80/x
  3. Step 3: Cross multiply
    539,037.40x = 807,681.30 × 338,999.80
  4. Step 4: Simplify right side
    539,037.40x = 273,803,799,163.74
  5. Step 5: Solve for x
    x = 273,803,799,163.74/539,037.40
  6. Step 6: Final answer
    x = 507,949.54

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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.