Home / 1,247,720.40-1,871,574.53-489,025.80

Finding the Fourth Proportional to 1,247,720.40, 1,871,574.53 and 489,025.80

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Solution

The fourth proportional to 1,247,720.40, 1,871,574.53 and 489,025.80 is: 733,536.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,720.40 : 1,871,574.53 = 489,025.80 : x
  2. Step 2: Convert to fraction form
    1,247,720.40/1,871,574.53 = 489,025.80/x
  3. Step 3: Cross multiply
    1,247,720.40x = 1,871,574.53 × 489,025.80
  4. Step 4: Simplify right side
    1,247,720.40x = 915,248,229,347.75
  5. Step 5: Solve for x
    x = 915,248,229,347.75/1,247,720.40
  6. Step 6: Final answer
    x = 733,536.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.