Home / 456,827.40-686,018.70-338,632.20

Finding the Fourth Proportional to 456,827.40, 686,018.70 and 338,632.20

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Solution

The fourth proportional to 456,827.40, 686,018.70 and 338,632.20 is: 508,524.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,827.40 : 686,018.70 = 338,632.20 : x
  2. Step 2: Convert to fraction form
    456,827.40/686,018.70 = 338,632.20/x
  3. Step 3: Cross multiply
    456,827.40x = 686,018.70 × 338,632.20
  4. Step 4: Simplify right side
    456,827.40x = 232,308,021,622.14
  5. Step 5: Solve for x
    x = 232,308,021,622.14/456,827.40
  6. Step 6: Final answer
    x = 508,524.71

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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.