Home / 871,799.20-1,203,036.64-489,801.38

Finding the Fourth Proportional to 871,799.20, 1,203,036.64 and 489,801.38

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Solution

The fourth proportional to 871,799.20, 1,203,036.64 and 489,801.38 is: 675,899.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,799.20 : 1,203,036.64 = 489,801.38 : x
  2. Step 2: Convert to fraction form
    871,799.20/1,203,036.64 = 489,801.38/x
  3. Step 3: Cross multiply
    871,799.20x = 1,203,036.64 × 489,801.38
  4. Step 4: Simplify right side
    871,799.20x = 589,248,999,222.88
  5. Step 5: Solve for x
    x = 589,248,999,222.88/871,799.20
  6. Step 6: Final answer
    x = 675,899.91

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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.