Home / 1,175,243.76-1,621,837.08-638,699.76

Finding the Fourth Proportional to 1,175,243.76, 1,621,837.08 and 638,699.76

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Solution

The fourth proportional to 1,175,243.76, 1,621,837.08 and 638,699.76 is: 881,406.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,175,243.76 : 1,621,837.08 = 638,699.76 : x
  2. Step 2: Convert to fraction form
    1,175,243.76/1,621,837.08 = 638,699.76/x
  3. Step 3: Cross multiply
    1,175,243.76x = 1,621,837.08 × 638,699.76
  4. Step 4: Simplify right side
    1,175,243.76x = 1,035,866,953,755.10
  5. Step 5: Solve for x
    x = 1,035,866,953,755.10/1,175,243.76
  6. Step 6: Final answer
    x = 881,406.04

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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.