Home / 428,837.30-642,444.03-286,252.65

Finding the Fourth Proportional to 428,837.30, 642,444.03 and 286,252.65

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Solution

The fourth proportional to 428,837.30, 642,444.03 and 286,252.65 is: 428,837.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,837.30 : 642,444.03 = 286,252.65 : x
  2. Step 2: Convert to fraction form
    428,837.30/642,444.03 = 286,252.65/x
  3. Step 3: Cross multiply
    428,837.30x = 642,444.03 × 286,252.65
  4. Step 4: Simplify right side
    428,837.30x = 183,901,306,064.18
  5. Step 5: Solve for x
    x = 183,901,306,064.18/428,837.30
  6. Step 6: Final answer
    x = 428,837.01

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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.