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Finding the Fourth Proportional to 564,391.95, 778,860.90 and 338,037.45

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Solution

The fourth proportional to 564,391.95, 778,860.90 and 338,037.45 is: 466,491.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,391.95 : 778,860.90 = 338,037.45 : x
  2. Step 2: Convert to fraction form
    564,391.95/778,860.90 = 338,037.45/x
  3. Step 3: Cross multiply
    564,391.95x = 778,860.90 × 338,037.45
  4. Step 4: Simplify right side
    564,391.95x = 263,284,152,540.71
  5. Step 5: Solve for x
    x = 263,284,152,540.71/564,391.95
  6. Step 6: Final answer
    x = 466,491.69

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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.