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Finding the Fourth Proportional to 768,491.80, 1,060,535.54 and 424,326.80

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Solution

The fourth proportional to 768,491.80, 1,060,535.54 and 424,326.80 is: 585,580.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,491.80 : 1,060,535.54 = 424,326.80 : x
  2. Step 2: Convert to fraction form
    768,491.80/1,060,535.54 = 424,326.80/x
  3. Step 3: Cross multiply
    768,491.80x = 1,060,535.54 × 424,326.80
  4. Step 4: Simplify right side
    768,491.80x = 450,013,648,262.32
  5. Step 5: Solve for x
    x = 450,013,648,262.32/768,491.80
  6. Step 6: Final answer
    x = 585,580.29

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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.