Home / 915,782.09-1,263,854.94-508,015.40

Finding the Fourth Proportional to 915,782.09, 1,263,854.94 and 508,015.40

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Solution

The fourth proportional to 915,782.09, 1,263,854.94 and 508,015.40 is: 701,103.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,782.09 : 1,263,854.94 = 508,015.40 : x
  2. Step 2: Convert to fraction form
    915,782.09/1,263,854.94 = 508,015.40/x
  3. Step 3: Cross multiply
    915,782.09x = 1,263,854.94 × 508,015.40
  4. Step 4: Simplify right side
    915,782.09x = 642,057,767,031.47
  5. Step 5: Solve for x
    x = 642,057,767,031.47/915,782.09
  6. Step 6: Final answer
    x = 701,103.22

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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.