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Finding the Fourth Proportional to 647,356.32, 893,351.70 and 360,894.69

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Solution

The fourth proportional to 647,356.32, 893,351.70 and 360,894.69 is: 498,034.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,356.32 : 893,351.70 = 360,894.69 : x
  2. Step 2: Convert to fraction form
    647,356.32/893,351.70 = 360,894.69/x
  3. Step 3: Cross multiply
    647,356.32x = 893,351.70 × 360,894.69
  4. Step 4: Simplify right side
    647,356.32x = 322,405,884,832.47
  5. Step 5: Solve for x
    x = 322,405,884,832.47/647,356.32
  6. Step 6: Final answer
    x = 498,034.66

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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.