Home / 1,220,913.12-1,684,946.34-677,100.90

Finding the Fourth Proportional to 1,220,913.12, 1,684,946.34 and 677,100.90

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Solution

The fourth proportional to 1,220,913.12, 1,684,946.34 and 677,100.90 is: 934,447.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,913.12 : 1,684,946.34 = 677,100.90 : x
  2. Step 2: Convert to fraction form
    1,220,913.12/1,684,946.34 = 677,100.90/x
  3. Step 3: Cross multiply
    1,220,913.12x = 1,684,946.34 × 677,100.90
  4. Step 4: Simplify right side
    1,220,913.12x = 1,140,878,683,265.71
  5. Step 5: Solve for x
    x = 1,140,878,683,265.71/1,220,913.12
  6. Step 6: Final answer
    x = 934,447.07

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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.