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Finding the Fourth Proportional to 1,038,600, 1,433,272.32 and 561,672

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Solution

The fourth proportional to 1,038,600, 1,433,272.32 and 561,672 is: 775,109.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,038,600 : 1,433,272.32 = 561,672 : x
  2. Step 2: Convert to fraction form
    1,038,600/1,433,272.32 = 561,672/x
  3. Step 3: Cross multiply
    1,038,600x = 1,433,272.32 × 561,672
  4. Step 4: Simplify right side
    1,038,600x = 805,028,930,519.04
  5. Step 5: Solve for x
    x = 805,028,930,519.04/1,038,600
  6. Step 6: Final answer
    x = 775,109.70

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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.