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Finding the Fourth Proportional to 646,344.36, 891,939.40 and 359,858.30

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Solution

The fourth proportional to 646,344.36, 891,939.40 and 359,858.30 is: 496,595.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,344.36 : 891,939.40 = 359,858.30 : x
  2. Step 2: Convert to fraction form
    646,344.36/891,939.40 = 359,858.30/x
  3. Step 3: Cross multiply
    646,344.36x = 891,939.40 × 359,858.30
  4. Step 4: Simplify right side
    646,344.36x = 320,971,790,827.68
  5. Step 5: Solve for x
    x = 320,971,790,827.68/646,344.36
  6. Step 6: Final answer
    x = 496,595.64

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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.