Home / 1,985,037.70-2,977,851.78-920,187.40

Finding the Fourth Proportional to 1,985,037.70, 2,977,851.78 and 920,187.40

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Solution

The fourth proportional to 1,985,037.70, 2,977,851.78 and 920,187.40 is: 1,380,417.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985,037.70 : 2,977,851.78 = 920,187.40 : x
  2. Step 2: Convert to fraction form
    1,985,037.70/2,977,851.78 = 920,187.40/x
  3. Step 3: Cross multiply
    1,985,037.70x = 2,977,851.78 × 920,187.40
  4. Step 4: Simplify right side
    1,985,037.70x = 2,740,181,687,023.57
  5. Step 5: Solve for x
    x = 2,740,181,687,023.57/1,985,037.70
  6. Step 6: Final answer
    x = 1,380,417.96

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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.