Home / 915,128.96-1,372,225.36-382,504.64

Finding the Fourth Proportional to 915,128.96, 1,372,225.36 and 382,504.64

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Solution

The fourth proportional to 915,128.96, 1,372,225.36 and 382,504.64 is: 573,561.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,128.96 : 1,372,225.36 = 382,504.64 : x
  2. Step 2: Convert to fraction form
    915,128.96/1,372,225.36 = 382,504.64/x
  3. Step 3: Cross multiply
    915,128.96x = 1,372,225.36 × 382,504.64
  4. Step 4: Simplify right side
    915,128.96x = 524,882,567,325.67
  5. Step 5: Solve for x
    x = 524,882,567,325.67/915,128.96
  6. Step 6: Final answer
    x = 573,561.31

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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.