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Finding the Fourth Proportional to 554,718.80, 765,306.47 and 409,873.79

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Solution

The fourth proportional to 554,718.80, 765,306.47 and 409,873.79 is: 565,474.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,718.80 : 765,306.47 = 409,873.79 : x
  2. Step 2: Convert to fraction form
    554,718.80/765,306.47 = 409,873.79/x
  3. Step 3: Cross multiply
    554,718.80x = 765,306.47 × 409,873.79
  4. Step 4: Simplify right side
    554,718.80x = 313,679,059,543.89
  5. Step 5: Solve for x
    x = 313,679,059,543.89/554,718.80
  6. Step 6: Final answer
    x = 565,474.01

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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.