Home / 750,071.61-1,035,091.51-405,900.18

Finding the Fourth Proportional to 750,071.61, 1,035,091.51 and 405,900.18

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Solution

The fourth proportional to 750,071.61, 1,035,091.51 and 405,900.18 is: 560,138.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    750,071.61 : 1,035,091.51 = 405,900.18 : x
  2. Step 2: Convert to fraction form
    750,071.61/1,035,091.51 = 405,900.18/x
  3. Step 3: Cross multiply
    750,071.61x = 1,035,091.51 × 405,900.18
  4. Step 4: Simplify right side
    750,071.61x = 420,143,829,210.72
  5. Step 5: Solve for x
    x = 420,143,829,210.72/750,071.61
  6. Step 6: Final answer
    x = 560,138.29

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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.