Home / 928,125.80-1,389,078.30-816,151.40

Finding the Fourth Proportional to 928,125.80, 1,389,078.30 and 816,151.40

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Solution

The fourth proportional to 928,125.80, 1,389,078.30 and 816,151.40 is: 1,221,491.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,125.80 : 1,389,078.30 = 816,151.40 : x
  2. Step 2: Convert to fraction form
    928,125.80/1,389,078.30 = 816,151.40/x
  3. Step 3: Cross multiply
    928,125.80x = 1,389,078.30 × 816,151.40
  4. Step 4: Simplify right side
    928,125.80x = 1,133,698,199,254.62
  5. Step 5: Solve for x
    x = 1,133,698,199,254.62/928,125.80
  6. Step 6: Final answer
    x = 1,221,491.96

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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.