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Finding the Fourth Proportional to 978,386.10, 1,467,579.15 and 635,901.90

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Solution

The fourth proportional to 978,386.10, 1,467,579.15 and 635,901.90 is: 953,852.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,386.10 : 1,467,579.15 = 635,901.90 : x
  2. Step 2: Convert to fraction form
    978,386.10/1,467,579.15 = 635,901.90/x
  3. Step 3: Cross multiply
    978,386.10x = 1,467,579.15 × 635,901.90
  4. Step 4: Simplify right side
    978,386.10x = 933,236,369,885.39
  5. Step 5: Solve for x
    x = 933,236,369,885.39/978,386.10
  6. Step 6: Final answer
    x = 953,852.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.