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Finding the Fourth Proportional to 553,779, 764,215.32 and 299,130.19

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Solution

The fourth proportional to 553,779, 764,215.32 and 299,130.19 is: 412,799.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,779 : 764,215.32 = 299,130.19 : x
  2. Step 2: Convert to fraction form
    553,779/764,215.32 = 299,130.19/x
  3. Step 3: Cross multiply
    553,779x = 764,215.32 × 299,130.19
  4. Step 4: Simplify right side
    553,779x = 228,599,873,083.71
  5. Step 5: Solve for x
    x = 228,599,873,083.71/553,779
  6. Step 6: Final answer
    x = 412,799.82

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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.