Home / 1,139,784.40-1,709,830.20-392,059.60

Finding the Fourth Proportional to 1,139,784.40, 1,709,830.20 and 392,059.60

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Solution

The fourth proportional to 1,139,784.40, 1,709,830.20 and 392,059.60 is: 588,142.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139,784.40 : 1,709,830.20 = 392,059.60 : x
  2. Step 2: Convert to fraction form
    1,139,784.40/1,709,830.20 = 392,059.60/x
  3. Step 3: Cross multiply
    1,139,784.40x = 1,709,830.20 × 392,059.60
  4. Step 4: Simplify right side
    1,139,784.40x = 670,355,344,279.92
  5. Step 5: Solve for x
    x = 670,355,344,279.92/1,139,784.40
  6. Step 6: Final answer
    x = 588,142.23

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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.