Home / 1,247,743.72-1,871,419.74-406,288.36

Finding the Fourth Proportional to 1,247,743.72, 1,871,419.74 and 406,288.36

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Solution

The fourth proportional to 1,247,743.72, 1,871,419.74 and 406,288.36 is: 609,368.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,743.72 : 1,871,419.74 = 406,288.36 : x
  2. Step 2: Convert to fraction form
    1,247,743.72/1,871,419.74 = 406,288.36/x
  3. Step 3: Cross multiply
    1,247,743.72x = 1,871,419.74 × 406,288.36
  4. Step 4: Simplify right side
    1,247,743.72x = 760,336,057,036.23
  5. Step 5: Solve for x
    x = 760,336,057,036.23/1,247,743.72
  6. Step 6: Final answer
    x = 609,368.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.