Home / 947,178.80-1,420,307.70-315,879.38

Finding the Fourth Proportional to 947,178.80, 1,420,307.70 and 315,879.38

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Solution

The fourth proportional to 947,178.80, 1,420,307.70 and 315,879.38 is: 473,665.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    947,178.80 : 1,420,307.70 = 315,879.38 : x
  2. Step 2: Convert to fraction form
    947,178.80/1,420,307.70 = 315,879.38/x
  3. Step 3: Cross multiply
    947,178.80x = 1,420,307.70 × 315,879.38
  4. Step 4: Simplify right side
    947,178.80x = 448,645,915,685.23
  5. Step 5: Solve for x
    x = 448,645,915,685.23/947,178.80
  6. Step 6: Final answer
    x = 473,665.50

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1.5x scale

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.