Home / 426,979.61-640,580.37-127,460.24

Finding the Fourth Proportional to 426,979.61, 640,580.37 and 127,460.24

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Solution

The fourth proportional to 426,979.61, 640,580.37 and 127,460.24 is: 191,223.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,979.61 : 640,580.37 = 127,460.24 : x
  2. Step 2: Convert to fraction form
    426,979.61/640,580.37 = 127,460.24/x
  3. Step 3: Cross multiply
    426,979.61x = 640,580.37 × 127,460.24
  4. Step 4: Simplify right side
    426,979.61x = 81,648,527,699.49
  5. Step 5: Solve for x
    x = 81,648,527,699.49/426,979.61
  6. Step 6: Final answer
    x = 191,223.48

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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.