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Finding the Fourth Proportional to 768,288.76, 1,060,255.47 and 424,123.89

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Solution

The fourth proportional to 768,288.76, 1,060,255.47 and 424,123.89 is: 585,300.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,288.76 : 1,060,255.47 = 424,123.89 : x
  2. Step 2: Convert to fraction form
    768,288.76/1,060,255.47 = 424,123.89/x
  3. Step 3: Cross multiply
    768,288.76x = 1,060,255.47 × 424,123.89
  4. Step 4: Simplify right side
    768,288.76x = 449,679,674,330.18
  5. Step 5: Solve for x
    x = 449,679,674,330.18/768,288.76
  6. Step 6: Final answer
    x = 585,300.34

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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.