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Finding the Fourth Proportional to 647,443.20, 893,475.36 and 360,981.12

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Solution

The fourth proportional to 647,443.20, 893,475.36 and 360,981.12 is: 498,156.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,443.20 : 893,475.36 = 360,981.12 : x
  2. Step 2: Convert to fraction form
    647,443.20/893,475.36 = 360,981.12/x
  3. Step 3: Cross multiply
    647,443.20x = 893,475.36 × 360,981.12
  4. Step 4: Simplify right side
    647,443.20x = 322,527,736,145.20
  5. Step 5: Solve for x
    x = 322,527,736,145.20/647,443.20
  6. Step 6: Final answer
    x = 498,156.03

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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.