Home / 1,175,247.76-1,621,842.60-638,703.76

Finding the Fourth Proportional to 1,175,247.76, 1,621,842.60 and 638,703.76

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Solution

The fourth proportional to 1,175,247.76, 1,621,842.60 and 638,703.76 is: 881,411.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,175,247.76 : 1,621,842.60 = 638,703.76 : x
  2. Step 2: Convert to fraction form
    1,175,247.76/1,621,842.60 = 638,703.76/x
  3. Step 3: Cross multiply
    1,175,247.76x = 1,621,842.60 × 638,703.76
  4. Step 4: Simplify right side
    1,175,247.76x = 1,035,876,966,748.18
  5. Step 5: Solve for x
    x = 1,035,876,966,748.18/1,175,247.76
  6. Step 6: Final answer
    x = 881,411.56

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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.