Home / 905,659.78-1,249,823.43-497,799.33

Finding the Fourth Proportional to 905,659.78, 1,249,823.43 and 497,799.33

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Solution

The fourth proportional to 905,659.78, 1,249,823.43 and 497,799.33 is: 686,970.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,659.78 : 1,249,823.43 = 497,799.33 : x
  2. Step 2: Convert to fraction form
    905,659.78/1,249,823.43 = 497,799.33/x
  3. Step 3: Cross multiply
    905,659.78x = 1,249,823.43 × 497,799.33
  4. Step 4: Simplify right side
    905,659.78x = 622,161,266,072.30
  5. Step 5: Solve for x
    x = 622,161,266,072.30/905,659.78
  6. Step 6: Final answer
    x = 686,970.19

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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.