Home / 1,221,390.45-1,685,528.19-670,102.56

Finding the Fourth Proportional to 1,221,390.45, 1,685,528.19 and 670,102.56

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Solution

The fourth proportional to 1,221,390.45, 1,685,528.19 and 670,102.56 is: 924,746.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,390.45 : 1,685,528.19 = 670,102.56 : x
  2. Step 2: Convert to fraction form
    1,221,390.45/1,685,528.19 = 670,102.56/x
  3. Step 3: Cross multiply
    1,221,390.45x = 1,685,528.19 × 670,102.56
  4. Step 4: Simplify right side
    1,221,390.45x = 1,129,476,755,071.17
  5. Step 5: Solve for x
    x = 1,129,476,755,071.17/1,221,390.45
  6. Step 6: Final answer
    x = 924,746.67

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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.