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Finding the Fourth Proportional to 553,341.98, 763,614.54 and 311,628.67

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Solution

The fourth proportional to 553,341.98, 763,614.54 and 311,628.67 is: 430,049.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,341.98 : 763,614.54 = 311,628.67 : x
  2. Step 2: Convert to fraction form
    553,341.98/763,614.54 = 311,628.67/x
  3. Step 3: Cross multiply
    553,341.98x = 763,614.54 × 311,628.67
  4. Step 4: Simplify right side
    553,341.98x = 237,964,181,583.83
  5. Step 5: Solve for x
    x = 237,964,181,583.83/553,341.98
  6. Step 6: Final answer
    x = 430,049.03

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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.