Home / 728,801.77-1,005,703.14-422,854.45

Finding the Fourth Proportional to 728,801.77, 1,005,703.14 and 422,854.45

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Solution

The fourth proportional to 728,801.77, 1,005,703.14 and 422,854.45 is: 583,514.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,801.77 : 1,005,703.14 = 422,854.45 : x
  2. Step 2: Convert to fraction form
    728,801.77/1,005,703.14 = 422,854.45/x
  3. Step 3: Cross multiply
    728,801.77x = 1,005,703.14 × 422,854.45
  4. Step 4: Simplify right side
    728,801.77x = 425,266,048,127.97
  5. Step 5: Solve for x
    x = 425,266,048,127.97/728,801.77
  6. Step 6: Final answer
    x = 583,514.02

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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.