Home / 915,129.75-1,372,895.64-375,389.22

Finding the Fourth Proportional to 915,129.75, 1,372,895.64 and 375,389.22

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Solution

The fourth proportional to 915,129.75, 1,372,895.64 and 375,389.22 is: 563,166.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,129.75 : 1,372,895.64 = 375,389.22 : x
  2. Step 2: Convert to fraction form
    915,129.75/1,372,895.64 = 375,389.22/x
  3. Step 3: Cross multiply
    915,129.75x = 1,372,895.64 × 375,389.22
  4. Step 4: Simplify right side
    915,129.75x = 515,370,223,441.00
  5. Step 5: Solve for x
    x = 515,370,223,441.00/915,129.75
  6. Step 6: Final answer
    x = 563,166.29

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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.