Home / 1,175,237.76-1,621,828.80-638,693.76

Finding the Fourth Proportional to 1,175,237.76, 1,621,828.80 and 638,693.76

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Solution

The fourth proportional to 1,175,237.76, 1,621,828.80 and 638,693.76 is: 881,397.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,175,237.76 : 1,621,828.80 = 638,693.76 : x
  2. Step 2: Convert to fraction form
    1,175,237.76/1,621,828.80 = 638,693.76/x
  3. Step 3: Cross multiply
    1,175,237.76x = 1,621,828.80 × 638,693.76
  4. Step 4: Simplify right side
    1,175,237.76x = 1,035,851,934,348.29
  5. Step 5: Solve for x
    x = 1,035,851,934,348.29/1,175,237.76
  6. Step 6: Final answer
    x = 881,397.76

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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.