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Finding the Fourth Proportional to 575,980.20, 794,897.28 and 317,907.72

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Solution

The fourth proportional to 575,980.20, 794,897.28 and 317,907.72 is: 438,737.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,980.20 : 794,897.28 = 317,907.72 : x
  2. Step 2: Convert to fraction form
    575,980.20/794,897.28 = 317,907.72/x
  3. Step 3: Cross multiply
    575,980.20x = 794,897.28 × 317,907.72
  4. Step 4: Simplify right side
    575,980.20x = 252,703,981,919.00
  5. Step 5: Solve for x
    x = 252,703,981,919.00/575,980.20
  6. Step 6: Final answer
    x = 438,737.27

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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.