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Finding the Fourth Proportional to 1,314,367.40, 1,972,425.90 and 745,747.40

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Solution

The fourth proportional to 1,314,367.40, 1,972,425.90 and 745,747.40 is: 1,119,117.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,314,367.40 : 1,972,425.90 = 745,747.40 : x
  2. Step 2: Convert to fraction form
    1,314,367.40/1,972,425.90 = 745,747.40/x
  3. Step 3: Cross multiply
    1,314,367.40x = 1,972,425.90 × 745,747.40
  4. Step 4: Simplify right side
    1,314,367.40x = 1,470,931,486,617.66
  5. Step 5: Solve for x
    x = 1,470,931,486,617.66/1,314,367.40
  6. Step 6: Final answer
    x = 1,119,117.45

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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.