Home / 728,800.77-1,005,701.76-422,853.45

Finding the Fourth Proportional to 728,800.77, 1,005,701.76 and 422,853.45

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Solution

The fourth proportional to 728,800.77, 1,005,701.76 and 422,853.45 is: 583,512.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,800.77 : 1,005,701.76 = 422,853.45 : x
  2. Step 2: Convert to fraction form
    728,800.77/1,005,701.76 = 422,853.45/x
  3. Step 3: Cross multiply
    728,800.77x = 1,005,701.76 × 422,853.45
  4. Step 4: Simplify right side
    728,800.77x = 425,264,458,887.07
  5. Step 5: Solve for x
    x = 425,264,458,887.07/728,800.77
  6. Step 6: Final answer
    x = 583,512.64

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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.