Home / 1,231,533.18-1,699,499.70-687,678.26

Finding the Fourth Proportional to 1,231,533.18, 1,699,499.70 and 687,678.26

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Solution

The fourth proportional to 1,231,533.18, 1,699,499.70 and 687,678.26 is: 948,987.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,533.18 : 1,699,499.70 = 687,678.26 : x
  2. Step 2: Convert to fraction form
    1,231,533.18/1,699,499.70 = 687,678.26/x
  3. Step 3: Cross multiply
    1,231,533.18x = 1,699,499.70 × 687,678.26
  4. Step 4: Simplify right side
    1,231,533.18x = 1,168,708,988,069.02
  5. Step 5: Solve for x
    x = 1,168,708,988,069.02/1,231,533.18
  6. Step 6: Final answer
    x = 948,987.01

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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.