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Finding the Fourth Proportional to 1,010,786, 1,393,223.52 and 716,536

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Solution

The fourth proportional to 1,010,786, 1,393,223.52 and 716,536 is: 987,642.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,010,786 : 1,393,223.52 = 716,536 : x
  2. Step 2: Convert to fraction form
    1,010,786/1,393,223.52 = 716,536/x
  3. Step 3: Cross multiply
    1,010,786x = 1,393,223.52 × 716,536
  4. Step 4: Simplify right side
    1,010,786x = 998,294,808,126.72
  5. Step 5: Solve for x
    x = 998,294,808,126.72/1,010,786
  6. Step 6: Final answer
    x = 987,642.10

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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.