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Finding the Fourth Proportional to 1,224,948.72, 1,837,796.12 and 626,330.40

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Solution

The fourth proportional to 1,224,948.72, 1,837,796.12 and 626,330.40 is: 939,686.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,224,948.72 : 1,837,796.12 = 626,330.40 : x
  2. Step 2: Convert to fraction form
    1,224,948.72/1,837,796.12 = 626,330.40/x
  3. Step 3: Cross multiply
    1,224,948.72x = 1,837,796.12 × 626,330.40
  4. Step 4: Simplify right side
    1,224,948.72x = 1,151,067,578,958.05
  5. Step 5: Solve for x
    x = 1,151,067,578,958.05/1,224,948.72
  6. Step 6: Final answer
    x = 939,686.34

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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.