Home / 875,103.30-1,207,635.40-487,914.12

Finding the Fourth Proportional to 875,103.30, 1,207,635.40 and 487,914.12

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Solution

The fourth proportional to 875,103.30, 1,207,635.40 and 487,914.12 is: 673,317.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,103.30 : 1,207,635.40 = 487,914.12 : x
  2. Step 2: Convert to fraction form
    875,103.30/1,207,635.40 = 487,914.12/x
  3. Step 3: Cross multiply
    875,103.30x = 1,207,635.40 × 487,914.12
  4. Step 4: Simplify right side
    875,103.30x = 589,222,363,471.85
  5. Step 5: Solve for x
    x = 589,222,363,471.85/875,103.30
  6. Step 6: Final answer
    x = 673,317.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.