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Finding the Fourth Proportional to 774,193.78, 1,068,404.32 and 425,338.68

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Solution

The fourth proportional to 774,193.78, 1,068,404.32 and 425,338.68 is: 586,976.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    774,193.78 : 1,068,404.32 = 425,338.68 : x
  2. Step 2: Convert to fraction form
    774,193.78/1,068,404.32 = 425,338.68/x
  3. Step 3: Cross multiply
    774,193.78x = 1,068,404.32 × 425,338.68
  4. Step 4: Simplify right side
    774,193.78x = 454,433,683,175.10
  5. Step 5: Solve for x
    x = 454,433,683,175.10/774,193.78
  6. Step 6: Final answer
    x = 586,976.67

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1.5x scale

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.