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Finding the Fourth Proportional to 702,840.81, 969,920.78 and 380,551.13

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Solution

The fourth proportional to 702,840.81, 969,920.78 and 380,551.13 is: 525,160.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,840.81 : 969,920.78 = 380,551.13 : x
  2. Step 2: Convert to fraction form
    702,840.81/969,920.78 = 380,551.13/x
  3. Step 3: Cross multiply
    702,840.81x = 969,920.78 × 380,551.13
  4. Step 4: Simplify right side
    702,840.81x = 369,104,447,864.93
  5. Step 5: Solve for x
    x = 369,104,447,864.93/702,840.81
  6. Step 6: Final answer
    x = 525,160.81

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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.