Home / 1,500,515.28-2,070,711.09-821,451.78

Finding the Fourth Proportional to 1,500,515.28, 2,070,711.09 and 821,451.78

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Solution

The fourth proportional to 1,500,515.28, 2,070,711.09 and 821,451.78 is: 1,133,603.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,500,515.28 : 2,070,711.09 = 821,451.78 : x
  2. Step 2: Convert to fraction form
    1,500,515.28/2,070,711.09 = 821,451.78/x
  3. Step 3: Cross multiply
    1,500,515.28x = 2,070,711.09 × 821,451.78
  4. Step 4: Simplify right side
    1,500,515.28x = 1,700,989,310,746.24
  5. Step 5: Solve for x
    x = 1,700,989,310,746.24/1,500,515.28
  6. Step 6: Final answer
    x = 1,133,603.46

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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.