Home / 1,869,219.72-2,803,892.76-521,415.36

Finding the Fourth Proportional to 1,869,219.72, 2,803,892.76 and 521,415.36

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Solution

The fourth proportional to 1,869,219.72, 2,803,892.76 and 521,415.36 is: 782,140.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,869,219.72 : 2,803,892.76 = 521,415.36 : x
  2. Step 2: Convert to fraction form
    1,869,219.72/2,803,892.76 = 521,415.36/x
  3. Step 3: Cross multiply
    1,869,219.72x = 2,803,892.76 × 521,415.36
  4. Step 4: Simplify right side
    1,869,219.72x = 1,461,992,752,856.79
  5. Step 5: Solve for x
    x = 1,461,992,752,856.79/1,869,219.72
  6. Step 6: Final answer
    x = 782,140.66

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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.