Home / 871,783.80-1,203,062.70-489,810.36

Finding the Fourth Proportional to 871,783.80, 1,203,062.70 and 489,810.36

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Solution

The fourth proportional to 871,783.80, 1,203,062.70 and 489,810.36 is: 675,938.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,783.80 : 1,203,062.70 = 489,810.36 : x
  2. Step 2: Convert to fraction form
    871,783.80/1,203,062.70 = 489,810.36/x
  3. Step 3: Cross multiply
    871,783.80x = 1,203,062.70 × 489,810.36
  4. Step 4: Simplify right side
    871,783.80x = 589,272,574,189.57
  5. Step 5: Solve for x
    x = 589,272,574,189.57/871,783.80
  6. Step 6: Final answer
    x = 675,938.89

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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.