Home / 778,187.42-1,073,915.07-438,655.58

Finding the Fourth Proportional to 778,187.42, 1,073,915.07 and 438,655.58

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Solution

The fourth proportional to 778,187.42, 1,073,915.07 and 438,655.58 is: 605,353.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,187.42 : 1,073,915.07 = 438,655.58 : x
  2. Step 2: Convert to fraction form
    778,187.42/1,073,915.07 = 438,655.58/x
  3. Step 3: Cross multiply
    778,187.42x = 1,073,915.07 × 438,655.58
  4. Step 4: Simplify right side
    778,187.42x = 471,078,837,901.59
  5. Step 5: Solve for x
    x = 471,078,837,901.59/778,187.42
  6. Step 6: Final answer
    x = 605,353.96

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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.