Home / 1,429,386.40-2,140,969.20-867,440.80

Finding the Fourth Proportional to 1,429,386.40, 2,140,969.20 and 867,440.80

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Solution

The fourth proportional to 1,429,386.40, 2,140,969.20 and 867,440.80 is: 1,299,273.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,429,386.40 : 2,140,969.20 = 867,440.80 : x
  2. Step 2: Convert to fraction form
    1,429,386.40/2,140,969.20 = 867,440.80/x
  3. Step 3: Cross multiply
    1,429,386.40x = 2,140,969.20 × 867,440.80
  4. Step 4: Simplify right side
    1,429,386.40x = 1,857,164,035,623.36
  5. Step 5: Solve for x
    x = 1,857,164,035,623.36/1,429,386.40
  6. Step 6: Final answer
    x = 1,299,273.62

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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.