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Finding the Fourth Proportional to 553,738.15, 764,159.16 and 299,089.34

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Solution

The fourth proportional to 553,738.15, 764,159.16 and 299,089.34 is: 412,743.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,738.15 : 764,159.16 = 299,089.34 : x
  2. Step 2: Convert to fraction form
    553,738.15/764,159.16 = 299,089.34/x
  3. Step 3: Cross multiply
    553,738.15x = 764,159.16 × 299,089.34
  4. Step 4: Simplify right side
    553,738.15x = 228,551,854,943.86
  5. Step 5: Solve for x
    x = 228,551,854,943.86/553,738.15
  6. Step 6: Final answer
    x = 412,743.56

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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.