Home / 457,582.56-686,139.68-191,270.40

Finding the Fourth Proportional to 457,582.56, 686,139.68 and 191,270.40

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Solution

The fourth proportional to 457,582.56, 686,139.68 and 191,270.40 is: 286,807.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,582.56 : 686,139.68 = 191,270.40 : x
  2. Step 2: Convert to fraction form
    457,582.56/686,139.68 = 191,270.40/x
  3. Step 3: Cross multiply
    457,582.56x = 686,139.68 × 191,270.40
  4. Step 4: Simplify right side
    457,582.56x = 131,238,211,049.47
  5. Step 5: Solve for x
    x = 131,238,211,049.47/457,582.56
  6. Step 6: Final answer
    x = 286,807.72

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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.