Home / 781,821.01-1,078,356.76-717,497.93

Finding the Fourth Proportional to 781,821.01, 1,078,356.76 and 717,497.93

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Solution

The fourth proportional to 781,821.01, 1,078,356.76 and 717,497.93 is: 989,636.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,821.01 : 1,078,356.76 = 717,497.93 : x
  2. Step 2: Convert to fraction form
    781,821.01/1,078,356.76 = 717,497.93/x
  3. Step 3: Cross multiply
    781,821.01x = 1,078,356.76 × 717,497.93
  4. Step 4: Simplify right side
    781,821.01x = 773,718,737,709.72
  5. Step 5: Solve for x
    x = 773,718,737,709.72/781,821.01
  6. Step 6: Final answer
    x = 989,636.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.