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Finding the Fourth Proportional to 622,199.66, 858,636.94 and 346,555.30

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Solution

The fourth proportional to 622,199.66, 858,636.94 and 346,555.30 is: 478,247.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,199.66 : 858,636.94 = 346,555.30 : x
  2. Step 2: Convert to fraction form
    622,199.66/858,636.94 = 346,555.30/x
  3. Step 3: Cross multiply
    622,199.66x = 858,636.94 × 346,555.30
  4. Step 4: Simplify right side
    622,199.66x = 297,565,182,332.78
  5. Step 5: Solve for x
    x = 297,565,182,332.78/622,199.66
  6. Step 6: Final answer
    x = 478,247.10

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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.