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Finding the Fourth Proportional to 858,570.72, 1,287,856 and 297,605.12

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Solution

The fourth proportional to 858,570.72, 1,287,856 and 297,605.12 is: 446,407.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,570.72 : 1,287,856 = 297,605.12 : x
  2. Step 2: Convert to fraction form
    858,570.72/1,287,856 = 297,605.12/x
  3. Step 3: Cross multiply
    858,570.72x = 1,287,856 × 297,605.12
  4. Step 4: Simplify right side
    858,570.72x = 383,272,539,422.72
  5. Step 5: Solve for x
    x = 383,272,539,422.72/858,570.72
  6. Step 6: Final answer
    x = 446,407.65

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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.