Home / 977,105.80-1,465,658.70-879,128.20

Finding the Fourth Proportional to 977,105.80, 1,465,658.70 and 879,128.20

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Solution

The fourth proportional to 977,105.80, 1,465,658.70 and 879,128.20 is: 1,318,692.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,105.80 : 1,465,658.70 = 879,128.20 : x
  2. Step 2: Convert to fraction form
    977,105.80/1,465,658.70 = 879,128.20/x
  3. Step 3: Cross multiply
    977,105.80x = 1,465,658.70 × 879,128.20
  4. Step 4: Simplify right side
    977,105.80x = 1,288,501,894,745.34
  5. Step 5: Solve for x
    x = 1,288,501,894,745.34/977,105.80
  6. Step 6: Final answer
    x = 1,318,692.30

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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.