Home / 753,570.72-1,130,512.32-221,109.12

Finding the Fourth Proportional to 753,570.72, 1,130,512.32 and 221,109.12

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Solution

The fourth proportional to 753,570.72, 1,130,512.32 and 221,109.12 is: 331,709.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,570.72 : 1,130,512.32 = 221,109.12 : x
  2. Step 2: Convert to fraction form
    753,570.72/1,130,512.32 = 221,109.12/x
  3. Step 3: Cross multiply
    753,570.72x = 1,130,512.32 × 221,109.12
  4. Step 4: Simplify right side
    753,570.72x = 249,966,584,224.36
  5. Step 5: Solve for x
    x = 249,966,584,224.36/753,570.72
  6. Step 6: Final answer
    x = 331,709.52

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.