Home / 876,223.85-1,209,249.68-489,114.68

Finding the Fourth Proportional to 876,223.85, 1,209,249.68 and 489,114.68

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Solution

The fourth proportional to 876,223.85, 1,209,249.68 and 489,114.68 is: 675,012.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,223.85 : 1,209,249.68 = 489,114.68 : x
  2. Step 2: Convert to fraction form
    876,223.85/1,209,249.68 = 489,114.68/x
  3. Step 3: Cross multiply
    876,223.85x = 1,209,249.68 × 489,114.68
  4. Step 4: Simplify right side
    876,223.85x = 591,461,765,182.50
  5. Step 5: Solve for x
    x = 591,461,765,182.50/876,223.85
  6. Step 6: Final answer
    x = 675,012.18

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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.