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Finding the Fourth Proportional to 553,809.75, 764,258.13 and 299,160.94

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Solution

The fourth proportional to 553,809.75, 764,258.13 and 299,160.94 is: 412,842.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,809.75 : 764,258.13 = 299,160.94 : x
  2. Step 2: Convert to fraction form
    553,809.75/764,258.13 = 299,160.94/x
  3. Step 3: Cross multiply
    553,809.75x = 764,258.13 × 299,160.94
  4. Step 4: Simplify right side
    553,809.75x = 228,636,176,752.15
  5. Step 5: Solve for x
    x = 228,636,176,752.15/553,809.75
  6. Step 6: Final answer
    x = 412,842.46

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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.