Home / 458,568.12-686,882.58-290,001.72

Finding the Fourth Proportional to 458,568.12, 686,882.58 and 290,001.72

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Solution

The fourth proportional to 458,568.12, 686,882.58 and 290,001.72 is: 434,389.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,568.12 : 686,882.58 = 290,001.72 : x
  2. Step 2: Convert to fraction form
    458,568.12/686,882.58 = 290,001.72/x
  3. Step 3: Cross multiply
    458,568.12x = 686,882.58 × 290,001.72
  4. Step 4: Simplify right side
    458,568.12x = 199,197,129,638.04
  5. Step 5: Solve for x
    x = 199,197,129,638.04/458,568.12
  6. Step 6: Final answer
    x = 434,389.40

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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.