Home / 947,986.72-1,421,981.52-379,623.76

Finding the Fourth Proportional to 947,986.72, 1,421,981.52 and 379,623.76

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Solution

The fourth proportional to 947,986.72, 1,421,981.52 and 379,623.76 is: 569,436.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    947,986.72 : 1,421,981.52 = 379,623.76 : x
  2. Step 2: Convert to fraction form
    947,986.72/1,421,981.52 = 379,623.76/x
  3. Step 3: Cross multiply
    947,986.72x = 1,421,981.52 × 379,623.76
  4. Step 4: Simplify right side
    947,986.72x = 539,817,971,272.92
  5. Step 5: Solve for x
    x = 539,817,971,272.92/947,986.72
  6. Step 6: Final answer
    x = 569,436.22

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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.