Home / 858,128.96-1,287,128.64-352,552.16

Finding the Fourth Proportional to 858,128.96, 1,287,128.64 and 352,552.16

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Solution

The fourth proportional to 858,128.96, 1,287,128.64 and 352,552.16 is: 528,801.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,128.96 : 1,287,128.64 = 352,552.16 : x
  2. Step 2: Convert to fraction form
    858,128.96/1,287,128.64 = 352,552.16/x
  3. Step 3: Cross multiply
    858,128.96x = 1,287,128.64 × 352,552.16
  4. Step 4: Simplify right side
    858,128.96x = 453,779,982,229.86
  5. Step 5: Solve for x
    x = 453,779,982,229.86/858,128.96
  6. Step 6: Final answer
    x = 528,801.62

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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.