Home / 420,010.06-579,624.92-258,971.54

Finding the Fourth Proportional to 420,010.06, 579,624.92 and 258,971.54

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Solution

The fourth proportional to 420,010.06, 579,624.92 and 258,971.54 is: 357,387.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,010.06 : 579,624.92 = 258,971.54 : x
  2. Step 2: Convert to fraction form
    420,010.06/579,624.92 = 258,971.54/x
  3. Step 3: Cross multiply
    420,010.06x = 579,624.92 × 258,971.54
  4. Step 4: Simplify right side
    420,010.06x = 150,106,358,154.78
  5. Step 5: Solve for x
    x = 150,106,358,154.78/420,010.06
  6. Step 6: Final answer
    x = 357,387.53

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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.