Home / 1,221,005.81-1,684,988.02-677,224.87

Finding the Fourth Proportional to 1,221,005.81, 1,684,988.02 and 677,224.87

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Solution

The fourth proportional to 1,221,005.81, 1,684,988.02 and 677,224.87 is: 934,570.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,005.81 : 1,684,988.02 = 677,224.87 : x
  2. Step 2: Convert to fraction form
    1,221,005.81/1,684,988.02 = 677,224.87/x
  3. Step 3: Cross multiply
    1,221,005.81x = 1,684,988.02 × 677,224.87
  4. Step 4: Simplify right side
    1,221,005.81x = 1,141,115,789,430.12
  5. Step 5: Solve for x
    x = 1,141,115,789,430.12/1,221,005.81
  6. Step 6: Final answer
    x = 934,570.32

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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.