Home / 936,130.71-1,291,856.49-506,409.78

Finding the Fourth Proportional to 936,130.71, 1,291,856.49 and 506,409.78

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Solution

The fourth proportional to 936,130.71, 1,291,856.49 and 506,409.78 is: 698,843.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    936,130.71 : 1,291,856.49 = 506,409.78 : x
  2. Step 2: Convert to fraction form
    936,130.71/1,291,856.49 = 506,409.78/x
  3. Step 3: Cross multiply
    936,130.71x = 1,291,856.49 × 506,409.78
  4. Step 4: Simplify right side
    936,130.71x = 654,208,760,892.47
  5. Step 5: Solve for x
    x = 654,208,760,892.47/936,130.71
  6. Step 6: Final answer
    x = 698,843.39

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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.