Home / 750,070.31-1,035,089.70-405,898.88

Finding the Fourth Proportional to 750,070.31, 1,035,089.70 and 405,898.88

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Solution

The fourth proportional to 750,070.31, 1,035,089.70 and 405,898.88 is: 560,136.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    750,070.31 : 1,035,089.70 = 405,898.88 : x
  2. Step 2: Convert to fraction form
    750,070.31/1,035,089.70 = 405,898.88/x
  3. Step 3: Cross multiply
    750,070.31x = 1,035,089.70 × 405,898.88
  4. Step 4: Simplify right side
    750,070.31x = 420,141,744,754.09
  5. Step 5: Solve for x
    x = 420,141,744,754.09/750,070.31
  6. Step 6: Final answer
    x = 560,136.49

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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.