Home / 876,633.36-1,209,742.21-489,454.71

Finding the Fourth Proportional to 876,633.36, 1,209,742.21 and 489,454.71

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Solution

The fourth proportional to 876,633.36, 1,209,742.21 and 489,454.71 is: 675,440.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,633.36 : 1,209,742.21 = 489,454.71 : x
  2. Step 2: Convert to fraction form
    876,633.36/1,209,742.21 = 489,454.71/x
  3. Step 3: Cross multiply
    876,633.36x = 1,209,742.21 × 489,454.71
  4. Step 4: Simplify right side
    876,633.36x = 592,114,015,297.96
  5. Step 5: Solve for x
    x = 592,114,015,297.96/876,633.36
  6. Step 6: Final answer
    x = 675,440.89

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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.