Home / 875,126.25-1,312,689.38-210,278.25

Finding the Fourth Proportional to 875,126.25, 1,312,689.38 and 210,278.25

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Solution

The fourth proportional to 875,126.25, 1,312,689.38 and 210,278.25 is: 315,417.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,126.25 : 1,312,689.38 = 210,278.25 : x
  2. Step 2: Convert to fraction form
    875,126.25/1,312,689.38 = 210,278.25/x
  3. Step 3: Cross multiply
    875,126.25x = 1,312,689.38 × 210,278.25
  4. Step 4: Simplify right side
    875,126.25x = 276,030,024,568.59
  5. Step 5: Solve for x
    x = 276,030,024,568.59/875,126.25
  6. Step 6: Final answer
    x = 315,417.38

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Half scale
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Double scale
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Similar ratio
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1.5x scale

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.