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Finding the Fourth Proportional to 768,173.18, 1,060,079.05 and 424,009.19

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Solution

The fourth proportional to 768,173.18, 1,060,079.05 and 424,009.19 is: 585,132.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,173.18 : 1,060,079.05 = 424,009.19 : x
  2. Step 2: Convert to fraction form
    768,173.18/1,060,079.05 = 424,009.19/x
  3. Step 3: Cross multiply
    768,173.18x = 1,060,079.05 × 424,009.19
  4. Step 4: Simplify right side
    768,173.18x = 449,483,260,916.64
  5. Step 5: Solve for x
    x = 449,483,260,916.64/768,173.18
  6. Step 6: Final answer
    x = 585,132.72

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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.