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Finding the Fourth Proportional to 438,491.45, 604,784.76 and 377,340.71

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Solution

The fourth proportional to 438,491.45, 604,784.76 and 377,340.71 is: 520,443.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,491.45 : 604,784.76 = 377,340.71 : x
  2. Step 2: Convert to fraction form
    438,491.45/604,784.76 = 377,340.71/x
  3. Step 3: Cross multiply
    438,491.45x = 604,784.76 × 377,340.71
  4. Step 4: Simplify right side
    438,491.45x = 228,209,905,824.95
  5. Step 5: Solve for x
    x = 228,209,905,824.95/438,491.45
  6. Step 6: Final answer
    x = 520,443.23

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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.