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Finding the Fourth Proportional to 768,289.76, 1,060,256.85 and 424,124.89

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Solution

The fourth proportional to 768,289.76, 1,060,256.85 and 424,124.89 is: 585,301.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,289.76 : 1,060,256.85 = 424,124.89 : x
  2. Step 2: Convert to fraction form
    768,289.76/1,060,256.85 = 424,124.89/x
  3. Step 3: Cross multiply
    768,289.76x = 1,060,256.85 × 424,124.89
  4. Step 4: Simplify right side
    768,289.76x = 449,681,319,878.00
  5. Step 5: Solve for x
    x = 449,681,319,878.00/768,289.76
  6. Step 6: Final answer
    x = 585,301.72

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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.