Home / 724,302.15-1,087,519.74-405,079.45

Finding the Fourth Proportional to 724,302.15, 1,087,519.74 and 405,079.45

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Solution

The fourth proportional to 724,302.15, 1,087,519.74 and 405,079.45 is: 608,215.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,302.15 : 1,087,519.74 = 405,079.45 : x
  2. Step 2: Convert to fraction form
    724,302.15/1,087,519.74 = 405,079.45/x
  3. Step 3: Cross multiply
    724,302.15x = 1,087,519.74 × 405,079.45
  4. Step 4: Simplify right side
    724,302.15x = 440,531,898,143.34
  5. Step 5: Solve for x
    x = 440,531,898,143.34/724,302.15
  6. Step 6: Final answer
    x = 608,215.64

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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.