Home / 987,110.40-1,480,811.40-313,255.20

Finding the Fourth Proportional to 987,110.40, 1,480,811.40 and 313,255.20

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Solution

The fourth proportional to 987,110.40, 1,480,811.40 and 313,255.20 is: 469,929.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,110.40 : 1,480,811.40 = 313,255.20 : x
  2. Step 2: Convert to fraction form
    987,110.40/1,480,811.40 = 313,255.20/x
  3. Step 3: Cross multiply
    987,110.40x = 1,480,811.40 × 313,255.20
  4. Step 4: Simplify right side
    987,110.40x = 463,871,871,269.28
  5. Step 5: Solve for x
    x = 463,871,871,269.28/987,110.40
  6. Step 6: Final answer
    x = 469,929.07

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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.