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Finding the Fourth Proportional to 647,775.52, 893,931.40 and 361,314.06

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Solution

The fourth proportional to 647,775.52, 893,931.40 and 361,314.06 is: 498,614.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,775.52 : 893,931.40 = 361,314.06 : x
  2. Step 2: Convert to fraction form
    647,775.52/893,931.40 = 361,314.06/x
  3. Step 3: Cross multiply
    647,775.52x = 893,931.40 × 361,314.06
  4. Step 4: Simplify right side
    647,775.52x = 322,989,983,495.48
  5. Step 5: Solve for x
    x = 322,989,983,495.48/647,775.52
  6. Step 6: Final answer
    x = 498,614.06

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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.