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Finding the Fourth Proportional to 977,610.60, 1,466,415.90 and 859,415.40

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Solution

The fourth proportional to 977,610.60, 1,466,415.90 and 859,415.40 is: 1,289,123.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,610.60 : 1,466,415.90 = 859,415.40 : x
  2. Step 2: Convert to fraction form
    977,610.60/1,466,415.90 = 859,415.40/x
  3. Step 3: Cross multiply
    977,610.60x = 1,466,415.90 × 859,415.40
  4. Step 4: Simplify right side
    977,610.60x = 1,260,260,407,264.86
  5. Step 5: Solve for x
    x = 1,260,260,407,264.86/977,610.60
  6. Step 6: Final answer
    x = 1,289,123.10

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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.