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Finding the Fourth Proportional to 702,803.21, 969,867.14 and 380,513.25

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Solution

The fourth proportional to 702,803.21, 969,867.14 and 380,513.25 is: 525,107.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,803.21 : 969,867.14 = 380,513.25 : x
  2. Step 2: Convert to fraction form
    702,803.21/969,867.14 = 380,513.25/x
  3. Step 3: Cross multiply
    702,803.21x = 969,867.14 × 380,513.25
  4. Step 4: Simplify right side
    702,803.21x = 369,047,295,607.04
  5. Step 5: Solve for x
    x = 369,047,295,607.04/702,803.21
  6. Step 6: Final answer
    x = 525,107.59

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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.