Home / 947,109.89-1,420,677.15-316,023.70

Finding the Fourth Proportional to 947,109.89, 1,420,677.15 and 316,023.70

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Solution

The fourth proportional to 947,109.89, 1,420,677.15 and 316,023.70 is: 474,039.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    947,109.89 : 1,420,677.15 = 316,023.70 : x
  2. Step 2: Convert to fraction form
    947,109.89/1,420,677.15 = 316,023.70/x
  3. Step 3: Cross multiply
    947,109.89x = 1,420,677.15 × 316,023.70
  4. Step 4: Simplify right side
    947,109.89x = 448,967,649,448.46
  5. Step 5: Solve for x
    x = 448,967,649,448.46/947,109.89
  6. Step 6: Final answer
    x = 474,039.66

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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.