Home / 1,440,916.47-1,988,654.81-1,393,598.90

Finding the Fourth Proportional to 1,440,916.47, 1,988,654.81 and 1,393,598.90

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Solution

The fourth proportional to 1,440,916.47, 1,988,654.81 and 1,393,598.90 is: 1,923,350.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440,916.47 : 1,988,654.81 = 1,393,598.90 : x
  2. Step 2: Convert to fraction form
    1,440,916.47/1,988,654.81 = 1,393,598.90/x
  3. Step 3: Cross multiply
    1,440,916.47x = 1,988,654.81 × 1,393,598.90
  4. Step 4: Simplify right side
    1,440,916.47x = 2,771,387,138,784.44
  5. Step 5: Solve for x
    x = 2,771,387,138,784.44/1,440,916.47
  6. Step 6: Final answer
    x = 1,923,350.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.