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Finding the Fourth Proportional to 555,344.70, 765,802.89 and 475,038.06

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Solution

The fourth proportional to 555,344.70, 765,802.89 and 475,038.06 is: 655,062.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,344.70 : 765,802.89 = 475,038.06 : x
  2. Step 2: Convert to fraction form
    555,344.70/765,802.89 = 475,038.06/x
  3. Step 3: Cross multiply
    555,344.70x = 765,802.89 × 475,038.06
  4. Step 4: Simplify right side
    555,344.70x = 363,785,519,207.99
  5. Step 5: Solve for x
    x = 363,785,519,207.99/555,344.70
  6. Step 6: Final answer
    x = 655,062.56

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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.