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Finding the Fourth Proportional to 855,465.60, 1,280,433.60 and 667,459.20

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Solution

The fourth proportional to 855,465.60, 1,280,433.60 and 667,459.20 is: 999,031.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,465.60 : 1,280,433.60 = 667,459.20 : x
  2. Step 2: Convert to fraction form
    855,465.60/1,280,433.60 = 667,459.20/x
  3. Step 3: Cross multiply
    855,465.60x = 1,280,433.60 × 667,459.20
  4. Step 4: Simplify right side
    855,465.60x = 854,637,186,309.12
  5. Step 5: Solve for x
    x = 854,637,186,309.12/855,465.60
  6. Step 6: Final answer
    x = 999,031.62

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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.