Home / 1,440,867.22-1,988,402.94-787,506.40

Finding the Fourth Proportional to 1,440,867.22, 1,988,402.94 and 787,506.40

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Solution

The fourth proportional to 1,440,867.22, 1,988,402.94 and 787,506.40 is: 1,086,762.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440,867.22 : 1,988,402.94 = 787,506.40 : x
  2. Step 2: Convert to fraction form
    1,440,867.22/1,988,402.94 = 787,506.40/x
  3. Step 3: Cross multiply
    1,440,867.22x = 1,988,402.94 × 787,506.40
  4. Step 4: Simplify right side
    1,440,867.22x = 1,565,880,041,028.82
  5. Step 5: Solve for x
    x = 1,565,880,041,028.82/1,440,867.22
  6. Step 6: Final answer
    x = 1,086,762.21

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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.