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Finding the Fourth Proportional to 702,776.82, 969,830.64 and 380,486.87

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Solution

The fourth proportional to 702,776.82, 969,830.64 and 380,486.87 is: 525,071.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,776.82 : 969,830.64 = 380,486.87 : x
  2. Step 2: Convert to fraction form
    702,776.82/969,830.64 = 380,486.87/x
  3. Step 3: Cross multiply
    702,776.82x = 969,830.64 × 380,486.87
  4. Step 4: Simplify right side
    702,776.82x = 369,007,819,794.54
  5. Step 5: Solve for x
    x = 369,007,819,794.54/702,776.82
  6. Step 6: Final answer
    x = 525,071.13

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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.