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Finding the Fourth Proportional to 702,688.83, 969,709.48 and 380,398.87

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Solution

The fourth proportional to 702,688.83, 969,709.48 and 380,398.87 is: 524,949.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,688.83 : 969,709.48 = 380,398.87 : x
  2. Step 2: Convert to fraction form
    702,688.83/969,709.48 = 380,398.87/x
  3. Step 3: Cross multiply
    702,688.83x = 969,709.48 × 380,398.87
  4. Step 4: Simplify right side
    702,688.83x = 368,876,390,420.29
  5. Step 5: Solve for x
    x = 368,876,390,420.29/702,688.83
  6. Step 6: Final answer
    x = 524,949.84

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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.