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Finding the Fourth Proportional to 1,017,995, 1,404,891.42 and 565,315.16

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Solution

The fourth proportional to 1,017,995, 1,404,891.42 and 565,315.16 is: 780,167.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,017,995 : 1,404,891.42 = 565,315.16 : x
  2. Step 2: Convert to fraction form
    1,017,995/1,404,891.42 = 565,315.16/x
  3. Step 3: Cross multiply
    1,017,995x = 1,404,891.42 × 565,315.16
  4. Step 4: Simplify right side
    1,017,995x = 794,206,417,879.93
  5. Step 5: Solve for x
    x = 794,206,417,879.93/1,017,995
  6. Step 6: Final answer
    x = 780,167.31

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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.