Home / 1,286,630.40-1,929,950.56-538,151.36

Finding the Fourth Proportional to 1,286,630.40, 1,929,950.56 and 538,151.36

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Solution

The fourth proportional to 1,286,630.40, 1,929,950.56 and 538,151.36 is: 807,229.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,630.40 : 1,929,950.56 = 538,151.36 : x
  2. Step 2: Convert to fraction form
    1,286,630.40/1,929,950.56 = 538,151.36/x
  3. Step 3: Cross multiply
    1,286,630.40x = 1,929,950.56 × 538,151.36
  4. Step 4: Simplify right side
    1,286,630.40x = 1,038,605,518,596.76
  5. Step 5: Solve for x
    x = 1,038,605,518,596.76/1,286,630.40
  6. Step 6: Final answer
    x = 807,229.11

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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.