Home / 439,428.38-606,405.69-258,156.86

Finding the Fourth Proportional to 439,428.38, 606,405.69 and 258,156.86

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Solution

The fourth proportional to 439,428.38, 606,405.69 and 258,156.86 is: 356,253.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,428.38 : 606,405.69 = 258,156.86 : x
  2. Step 2: Convert to fraction form
    439,428.38/606,405.69 = 258,156.86/x
  3. Step 3: Cross multiply
    439,428.38x = 606,405.69 × 258,156.86
  4. Step 4: Simplify right side
    439,428.38x = 156,547,785,784.51
  5. Step 5: Solve for x
    x = 156,547,785,784.51/439,428.38
  6. Step 6: Final answer
    x = 356,253.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.