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Finding the Fourth Proportional to 1,314,448.40, 1,972,547.40 and 745,828.40

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Solution

The fourth proportional to 1,314,448.40, 1,972,547.40 and 745,828.40 is: 1,119,238.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,314,448.40 : 1,972,547.40 = 745,828.40 : x
  2. Step 2: Convert to fraction form
    1,314,448.40/1,972,547.40 = 745,828.40/x
  3. Step 3: Cross multiply
    1,314,448.40x = 1,972,547.40 × 745,828.40
  4. Step 4: Simplify right side
    1,314,448.40x = 1,471,181,871,266.16
  5. Step 5: Solve for x
    x = 1,471,181,871,266.16/1,314,448.40
  6. Step 6: Final answer
    x = 1,119,238.97

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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.