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Finding the Fourth Proportional to 567,528.88, 783,218.84 and 312,879.48

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Solution

The fourth proportional to 567,528.88, 783,218.84 and 312,879.48 is: 431,789.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,528.88 : 783,218.84 = 312,879.48 : x
  2. Step 2: Convert to fraction form
    567,528.88/783,218.84 = 312,879.48/x
  3. Step 3: Cross multiply
    567,528.88x = 783,218.84 × 312,879.48
  4. Step 4: Simplify right side
    567,528.88x = 245,053,103,385.40
  5. Step 5: Solve for x
    x = 245,053,103,385.40/567,528.88
  6. Step 6: Final answer
    x = 431,789.66

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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.