Home / 1,143,823.78-1,578,462.15-620,526.70

Finding the Fourth Proportional to 1,143,823.78, 1,578,462.15 and 620,526.70

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Solution

The fourth proportional to 1,143,823.78, 1,578,462.15 and 620,526.70 is: 856,318.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,143,823.78 : 1,578,462.15 = 620,526.70 : x
  2. Step 2: Convert to fraction form
    1,143,823.78/1,578,462.15 = 620,526.70/x
  3. Step 3: Cross multiply
    1,143,823.78x = 1,578,462.15 × 620,526.70
  4. Step 4: Simplify right side
    1,143,823.78x = 979,477,909,014.41
  5. Step 5: Solve for x
    x = 979,477,909,014.41/1,143,823.78
  6. Step 6: Final answer
    x = 856,318.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.