Home / 428,904.01-642,341.54-372,437.19

Finding the Fourth Proportional to 428,904.01, 642,341.54 and 372,437.19

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Solution

The fourth proportional to 428,904.01, 642,341.54 and 372,437.19 is: 557,774.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,904.01 : 642,341.54 = 372,437.19 : x
  2. Step 2: Convert to fraction form
    428,904.01/642,341.54 = 372,437.19/x
  3. Step 3: Cross multiply
    428,904.01x = 642,341.54 × 372,437.19
  4. Step 4: Simplify right side
    428,904.01x = 239,231,879,108.97
  5. Step 5: Solve for x
    x = 239,231,879,108.97/428,904.01
  6. Step 6: Final answer
    x = 557,774.87

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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.