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Finding the Fourth Proportional to 1,314,368.40, 1,972,427.40 and 745,748.40

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Solution

The fourth proportional to 1,314,368.40, 1,972,427.40 and 745,748.40 is: 1,119,118.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,314,368.40 : 1,972,427.40 = 745,748.40 : x
  2. Step 2: Convert to fraction form
    1,314,368.40/1,972,427.40 = 745,748.40/x
  3. Step 3: Cross multiply
    1,314,368.40x = 1,972,427.40 × 745,748.40
  4. Step 4: Simplify right side
    1,314,368.40x = 1,470,934,577,666.16
  5. Step 5: Solve for x
    x = 1,470,934,577,666.16/1,314,368.40
  6. Step 6: Final answer
    x = 1,119,118.95

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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.