Home / 876,202.71-1,209,220.47-489,093.45

Finding the Fourth Proportional to 876,202.71, 1,209,220.47 and 489,093.45

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Solution

The fourth proportional to 876,202.71, 1,209,220.47 and 489,093.45 is: 674,982.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,202.71 : 1,209,220.47 = 489,093.45 : x
  2. Step 2: Convert to fraction form
    876,202.71/1,209,220.47 = 489,093.45/x
  3. Step 3: Cross multiply
    876,202.71x = 1,209,220.47 × 489,093.45
  4. Step 4: Simplify right side
    876,202.71x = 591,421,811,482.92
  5. Step 5: Solve for x
    x = 591,421,811,482.92/876,202.71
  6. Step 6: Final answer
    x = 674,982.86

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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.