Home / 851,622.81-1,277,384.10-319,099.25

Finding the Fourth Proportional to 851,622.81, 1,277,384.10 and 319,099.25

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Solution

The fourth proportional to 851,622.81, 1,277,384.10 and 319,099.25 is: 478,630.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,622.81 : 1,277,384.10 = 319,099.25 : x
  2. Step 2: Convert to fraction form
    851,622.81/1,277,384.10 = 319,099.25/x
  3. Step 3: Cross multiply
    851,622.81x = 1,277,384.10 × 319,099.25
  4. Step 4: Simplify right side
    851,622.81x = 407,612,301,885.01
  5. Step 5: Solve for x
    x = 407,612,301,885.01/851,622.81
  6. Step 6: Final answer
    x = 478,630.09

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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.