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Finding the Fourth Proportional to 1,369,802.40, 1,921,922.40 and 1,369,802.40

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Solution

The fourth proportional to 1,369,802.40, 1,921,922.40 and 1,369,802.40 is: 1,921,922.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,369,802.40 : 1,921,922.40 = 1,369,802.40 : x
  2. Step 2: Convert to fraction form
    1,369,802.40/1,921,922.40 = 1,369,802.40/x
  3. Step 3: Cross multiply
    1,369,802.40x = 1,921,922.40 × 1,369,802.40
  4. Step 4: Simplify right side
    1,369,802.40x = 2,632,653,916,133.76
  5. Step 5: Solve for x
    x = 2,632,653,916,133.76/1,369,802.40
  6. Step 6: Final answer
    x = 1,921,922.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.