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Finding the Fourth Proportional to 1,791,795.72, 2,472,678.34 and 986,979.72

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Solution

The fourth proportional to 1,791,795.72, 2,472,678.34 and 986,979.72 is: 1,362,032.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,791,795.72 : 2,472,678.34 = 986,979.72 : x
  2. Step 2: Convert to fraction form
    1,791,795.72/2,472,678.34 = 986,979.72/x
  3. Step 3: Cross multiply
    1,791,795.72x = 2,472,678.34 × 986,979.72
  4. Step 4: Simplify right side
    1,791,795.72x = 2,440,483,375,663.26
  5. Step 5: Solve for x
    x = 2,440,483,375,663.26/1,791,795.72
  6. Step 6: Final answer
    x = 1,362,032.15

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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.