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Finding the Fourth Proportional to 622,689.82, 857,502.57 and 540,980.80

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Solution

The fourth proportional to 622,689.82, 857,502.57 and 540,980.80 is: 744,981.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,689.82 : 857,502.57 = 540,980.80 : x
  2. Step 2: Convert to fraction form
    622,689.82/857,502.57 = 540,980.80/x
  3. Step 3: Cross multiply
    622,689.82x = 857,502.57 × 540,980.80
  4. Step 4: Simplify right side
    622,689.82x = 463,892,426,320.66
  5. Step 5: Solve for x
    x = 463,892,426,320.66/622,689.82
  6. Step 6: Final answer
    x = 744,981.55

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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.