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Finding the Fourth Proportional to 768,869.34, 1,061,035.44 and 424,728.90

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Solution

The fourth proportional to 768,869.34, 1,061,035.44 and 424,728.90 is: 586,123.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,869.34 : 1,061,035.44 = 424,728.90 : x
  2. Step 2: Convert to fraction form
    768,869.34/1,061,035.44 = 424,728.90/x
  3. Step 3: Cross multiply
    768,869.34x = 1,061,035.44 × 424,728.90
  4. Step 4: Simplify right side
    768,869.34x = 450,652,415,292.22
  5. Step 5: Solve for x
    x = 450,652,415,292.22/768,869.34
  6. Step 6: Final answer
    x = 586,123.53

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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.