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Finding the Fourth Proportional to 1,317,569.72, 1,976,471.28 and 370,948.64

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Solution

The fourth proportional to 1,317,569.72, 1,976,471.28 and 370,948.64 is: 556,455.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317,569.72 : 1,976,471.28 = 370,948.64 : x
  2. Step 2: Convert to fraction form
    1,317,569.72/1,976,471.28 = 370,948.64/x
  3. Step 3: Cross multiply
    1,317,569.72x = 1,976,471.28 × 370,948.64
  4. Step 4: Simplify right side
    1,317,569.72x = 733,169,333,315.06
  5. Step 5: Solve for x
    x = 733,169,333,315.06/1,317,569.72
  6. Step 6: Final answer
    x = 556,455.82

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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.