Home / 916,020.77-1,264,128.92-508,109.31

Finding the Fourth Proportional to 916,020.77, 1,264,128.92 and 508,109.31

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Solution

The fourth proportional to 916,020.77, 1,264,128.92 and 508,109.31 is: 701,202.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,020.77 : 1,264,128.92 = 508,109.31 : x
  2. Step 2: Convert to fraction form
    916,020.77/1,264,128.92 = 508,109.31/x
  3. Step 3: Cross multiply
    916,020.77x = 1,264,128.92 × 508,109.31
  4. Step 4: Simplify right side
    916,020.77x = 642,315,670,751.70
  5. Step 5: Solve for x
    x = 642,315,670,751.70/916,020.77
  6. Step 6: Final answer
    x = 701,202.09

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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.