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Finding the Fourth Proportional to 893,398.70, 1,232,886.15 and 485,492.82

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Solution

The fourth proportional to 893,398.70, 1,232,886.15 and 485,492.82 is: 669,977.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    893,398.70 : 1,232,886.15 = 485,492.82 : x
  2. Step 2: Convert to fraction form
    893,398.70/1,232,886.15 = 485,492.82/x
  3. Step 3: Cross multiply
    893,398.70x = 1,232,886.15 × 485,492.82
  4. Step 4: Simplify right side
    893,398.70x = 598,557,373,702.44
  5. Step 5: Solve for x
    x = 598,557,373,702.44/893,398.70
  6. Step 6: Final answer
    x = 669,977.89

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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.