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Finding the Fourth Proportional to 555,044.50, 765,963.66 and 300,395.62

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Solution

The fourth proportional to 555,044.50, 765,963.66 and 300,395.62 is: 414,547.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,044.50 : 765,963.66 = 300,395.62 : x
  2. Step 2: Convert to fraction form
    555,044.50/765,963.66 = 300,395.62/x
  3. Step 3: Cross multiply
    555,044.50x = 765,963.66 × 300,395.62
  4. Step 4: Simplify right side
    555,044.50x = 230,092,128,937.38
  5. Step 5: Solve for x
    x = 230,092,128,937.38/555,044.50
  6. Step 6: Final answer
    x = 414,547.17

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1.5x scale

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.