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Finding the Fourth Proportional to 768,612.42, 1,061,127.87 and 510,838.93

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Solution

The fourth proportional to 768,612.42, 1,061,127.87 and 510,838.93 is: 705,251.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,612.42 : 1,061,127.87 = 510,838.93 : x
  2. Step 2: Convert to fraction form
    768,612.42/1,061,127.87 = 510,838.93/x
  3. Step 3: Cross multiply
    768,612.42x = 1,061,127.87 × 510,838.93
  4. Step 4: Simplify right side
    768,612.42x = 542,065,423,567.06
  5. Step 5: Solve for x
    x = 542,065,423,567.06/768,612.42
  6. Step 6: Final answer
    x = 705,251.97

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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.