Home / 728,938.43-1,005,810.44-422,944.66

Finding the Fourth Proportional to 728,938.43, 1,005,810.44 and 422,944.66

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Solution

The fourth proportional to 728,938.43, 1,005,810.44 and 422,944.66 is: 583,591.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,938.43 : 1,005,810.44 = 422,944.66 : x
  2. Step 2: Convert to fraction form
    728,938.43/1,005,810.44 = 422,944.66/x
  3. Step 3: Cross multiply
    728,938.43x = 1,005,810.44 × 422,944.66
  4. Step 4: Simplify right side
    728,938.43x = 425,402,154,570.25
  5. Step 5: Solve for x
    x = 425,402,154,570.25/728,938.43
  6. Step 6: Final answer
    x = 583,591.34

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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.