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Finding the Fourth Proportional to 977,605.60, 1,466,408.40 and 859,410.40

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Solution

The fourth proportional to 977,605.60, 1,466,408.40 and 859,410.40 is: 1,289,115.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,605.60 : 1,466,408.40 = 859,410.40 : x
  2. Step 2: Convert to fraction form
    977,605.60/1,466,408.40 = 859,410.40/x
  3. Step 3: Cross multiply
    977,605.60x = 1,466,408.40 × 859,410.40
  4. Step 4: Simplify right side
    977,605.60x = 1,260,246,629,607.36
  5. Step 5: Solve for x
    x = 1,260,246,629,607.36/977,605.60
  6. Step 6: Final answer
    x = 1,289,115.60

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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.