Home / 875,101.08-1,207,530.54-487,821.45

Finding the Fourth Proportional to 875,101.08, 1,207,530.54 and 487,821.45

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Solution

The fourth proportional to 875,101.08, 1,207,530.54 and 487,821.45 is: 673,132.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,101.08 : 1,207,530.54 = 487,821.45 : x
  2. Step 2: Convert to fraction form
    875,101.08/1,207,530.54 = 487,821.45/x
  3. Step 3: Cross multiply
    875,101.08x = 1,207,530.54 × 487,821.45
  4. Step 4: Simplify right side
    875,101.08x = 589,059,298,942.08
  5. Step 5: Solve for x
    x = 589,059,298,942.08/875,101.08
  6. Step 6: Final answer
    x = 673,132.87

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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.