Home / 728,938.68-1,005,810.79-422,944.91

Finding the Fourth Proportional to 728,938.68, 1,005,810.79 and 422,944.91

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Solution

The fourth proportional to 728,938.68, 1,005,810.79 and 422,944.91 is: 583,591.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,938.68 : 1,005,810.79 = 422,944.91 : x
  2. Step 2: Convert to fraction form
    728,938.68/1,005,810.79 = 422,944.91/x
  3. Step 3: Cross multiply
    728,938.68x = 1,005,810.79 × 422,944.91
  4. Step 4: Simplify right side
    728,938.68x = 425,402,551,938.85
  5. Step 5: Solve for x
    x = 425,402,551,938.85/728,938.68
  6. Step 6: Final answer
    x = 583,591.68

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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.