Home / 987,002.71-1,362,073.12-579,111.48

Finding the Fourth Proportional to 987,002.71, 1,362,073.12 and 579,111.48

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Solution

The fourth proportional to 987,002.71, 1,362,073.12 and 579,111.48 is: 799,179.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,002.71 : 1,362,073.12 = 579,111.48 : x
  2. Step 2: Convert to fraction form
    987,002.71/1,362,073.12 = 579,111.48/x
  3. Step 3: Cross multiply
    987,002.71x = 1,362,073.12 × 579,111.48
  4. Step 4: Simplify right side
    987,002.71x = 788,792,178,943.64
  5. Step 5: Solve for x
    x = 788,792,178,943.64/987,002.71
  6. Step 6: Final answer
    x = 799,179.35

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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.