Home / 1,500,998.31-2,071,378.53-812,670.30

Finding the Fourth Proportional to 1,500,998.31, 2,071,378.53 and 812,670.30

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Solution

The fourth proportional to 1,500,998.31, 2,071,378.53 and 812,670.30 is: 1,121,485.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,500,998.31 : 2,071,378.53 = 812,670.30 : x
  2. Step 2: Convert to fraction form
    1,500,998.31/2,071,378.53 = 812,670.30/x
  3. Step 3: Cross multiply
    1,500,998.31x = 2,071,378.53 × 812,670.30
  4. Step 4: Simplify right side
    1,500,998.31x = 1,683,347,811,388.66
  5. Step 5: Solve for x
    x = 1,683,347,811,388.66/1,500,998.31
  6. Step 6: Final answer
    x = 1,121,485.48

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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.