Home / 645,845.16-891,301.32-359,371.44

Finding the Fourth Proportional to 645,845.16, 891,301.32 and 359,371.44

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Solution

The fourth proportional to 645,845.16, 891,301.32 and 359,371.44 is: 495,952.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,845.16 : 891,301.32 = 359,371.44 : x
  2. Step 2: Convert to fraction form
    645,845.16/891,301.32 = 359,371.44/x
  3. Step 3: Cross multiply
    645,845.16x = 891,301.32 × 359,371.44
  4. Step 4: Simplify right side
    645,845.16x = 320,308,238,842.30
  5. Step 5: Solve for x
    x = 320,308,238,842.30/645,845.16
  6. Step 6: Final answer
    x = 495,952.06

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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.