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Finding the Fourth Proportional to 702,699.72, 969,725.91 and 380,409.81

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Solution

The fourth proportional to 702,699.72, 969,725.91 and 380,409.81 is: 524,965.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,699.72 : 969,725.91 = 380,409.81 : x
  2. Step 2: Convert to fraction form
    702,699.72/969,725.91 = 380,409.81/x
  3. Step 3: Cross multiply
    702,699.72x = 969,725.91 × 380,409.81
  4. Step 4: Simplify right side
    702,699.72x = 368,893,249,175.18
  5. Step 5: Solve for x
    x = 368,893,249,175.18/702,699.72
  6. Step 6: Final answer
    x = 524,965.70

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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.