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Finding the Fourth Proportional to 438,764.70, 657,023.45 and 303,641.67

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Solution

The fourth proportional to 438,764.70, 657,023.45 and 303,641.67 is: 454,684.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,764.70 : 657,023.45 = 303,641.67 : x
  2. Step 2: Convert to fraction form
    438,764.70/657,023.45 = 303,641.67/x
  3. Step 3: Cross multiply
    438,764.70x = 657,023.45 × 303,641.67
  4. Step 4: Simplify right side
    438,764.70x = 199,499,696,068.95
  5. Step 5: Solve for x
    x = 199,499,696,068.95/438,764.70
  6. Step 6: Final answer
    x = 454,684.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.