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Finding the Fourth Proportional to 555,001.62, 765,263.78 and 410,017.20

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Solution

The fourth proportional to 555,001.62, 765,263.78 and 410,017.20 is: 565,352.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,001.62 : 765,263.78 = 410,017.20 : x
  2. Step 2: Convert to fraction form
    555,001.62/765,263.78 = 410,017.20/x
  3. Step 3: Cross multiply
    555,001.62x = 765,263.78 × 410,017.20
  4. Step 4: Simplify right side
    555,001.62x = 313,771,312,337.02
  5. Step 5: Solve for x
    x = 313,771,312,337.02/555,001.62
  6. Step 6: Final answer
    x = 565,352.07

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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.