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Finding the Fourth Proportional to 768,890.90, 1,061,065.19 and 424,750.46

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Solution

The fourth proportional to 768,890.90, 1,061,065.19 and 424,750.46 is: 586,153.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,890.90 : 1,061,065.19 = 424,750.46 : x
  2. Step 2: Convert to fraction form
    768,890.90/1,061,065.19 = 424,750.46/x
  3. Step 3: Cross multiply
    768,890.90x = 1,061,065.19 × 424,750.46
  4. Step 4: Simplify right side
    768,890.90x = 450,687,923,299.04
  5. Step 5: Solve for x
    x = 450,687,923,299.04/768,890.90
  6. Step 6: Final answer
    x = 586,153.28

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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.