Home / 8,085,407.40-12,128,111.10-3,290,628.60

Finding the Fourth Proportional to 8,085,407.40, 12,128,111.10 and 3,290,628.60

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Solution

The fourth proportional to 8,085,407.40, 12,128,111.10 and 3,290,628.60 is: 4,935,942.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,085,407.40 : 12,128,111.10 = 3,290,628.60 : x
  2. Step 2: Convert to fraction form
    8,085,407.40/12,128,111.10 = 3,290,628.60/x
  3. Step 3: Cross multiply
    8,085,407.40x = 12,128,111.10 × 3,290,628.60
  4. Step 4: Simplify right side
    8,085,407.40x = 39,909,109,249,637.46
  5. Step 5: Solve for x
    x = 39,909,109,249,637.46/8,085,407.40
  6. Step 6: Final answer
    x = 4,935,942.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.