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Finding the Fourth Proportional to 445,130.06, 668,362.13 and 385,342.95

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Solution

The fourth proportional to 445,130.06, 668,362.13 and 385,342.95 is: 578,591.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,130.06 : 668,362.13 = 385,342.95 : x
  2. Step 2: Convert to fraction form
    445,130.06/668,362.13 = 385,342.95/x
  3. Step 3: Cross multiply
    445,130.06x = 668,362.13 × 385,342.95
  4. Step 4: Simplify right side
    445,130.06x = 257,548,632,915.77
  5. Step 5: Solve for x
    x = 257,548,632,915.77/445,130.06
  6. Step 6: Final answer
    x = 578,591.87

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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.