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Finding the Fourth Proportional to 539,063.40, 807,914.70 and 272,897.40

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Solution

The fourth proportional to 539,063.40, 807,914.70 and 272,897.40 is: 409,001.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,063.40 : 807,914.70 = 272,897.40 : x
  2. Step 2: Convert to fraction form
    539,063.40/807,914.70 = 272,897.40/x
  3. Step 3: Cross multiply
    539,063.40x = 807,914.70 × 272,897.40
  4. Step 4: Simplify right side
    539,063.40x = 220,477,821,051.78
  5. Step 5: Solve for x
    x = 220,477,821,051.78/539,063.40
  6. Step 6: Final answer
    x = 409,001.65

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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.