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Finding the Fourth Proportional to 665,124.20, 998,312.70 and 349,807.40

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Solution

The fourth proportional to 665,124.20, 998,312.70 and 349,807.40 is: 525,040.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,124.20 : 998,312.70 = 349,807.40 : x
  2. Step 2: Convert to fraction form
    665,124.20/998,312.70 = 349,807.40/x
  3. Step 3: Cross multiply
    665,124.20x = 998,312.70 × 349,807.40
  4. Step 4: Simplify right side
    665,124.20x = 349,217,169,973.98
  5. Step 5: Solve for x
    x = 349,217,169,973.98/665,124.20
  6. Step 6: Final answer
    x = 525,040.54

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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.