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Finding the Fourth Proportional to 646,266.77, 891,830.76 and 359,786.88

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Solution

The fourth proportional to 646,266.77, 891,830.76 and 359,786.88 is: 496,496.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,266.77 : 891,830.76 = 359,786.88 : x
  2. Step 2: Convert to fraction form
    646,266.77/891,830.76 = 359,786.88/x
  3. Step 3: Cross multiply
    646,266.77x = 891,830.76 × 359,786.88
  4. Step 4: Simplify right side
    646,266.77x = 320,869,006,628.43
  5. Step 5: Solve for x
    x = 320,869,006,628.43/646,266.77
  6. Step 6: Final answer
    x = 496,496.22

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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.