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Finding the Fourth Proportional to 1,807,938.88, 2,711,905.68 and 742,230.16

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Solution

The fourth proportional to 1,807,938.88, 2,711,905.68 and 742,230.16 is: 1,113,344.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,807,938.88 : 2,711,905.68 = 742,230.16 : x
  2. Step 2: Convert to fraction form
    1,807,938.88/2,711,905.68 = 742,230.16/x
  3. Step 3: Cross multiply
    1,807,938.88x = 2,711,905.68 × 742,230.16
  4. Step 4: Simplify right side
    1,807,938.88x = 2,012,858,186,771.31
  5. Step 5: Solve for x
    x = 2,012,858,186,771.31/1,807,938.88
  6. Step 6: Final answer
    x = 1,113,344.16

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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.