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Finding the Fourth Proportional to 647,215.56, 893,161.62 and 360,753.80

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Solution

The fourth proportional to 647,215.56, 893,161.62 and 360,753.80 is: 497,842.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,215.56 : 893,161.62 = 360,753.80 : x
  2. Step 2: Convert to fraction form
    647,215.56/893,161.62 = 360,753.80/x
  3. Step 3: Cross multiply
    647,215.56x = 893,161.62 × 360,753.80
  4. Step 4: Simplify right side
    647,215.56x = 322,211,448,429.16
  5. Step 5: Solve for x
    x = 322,211,448,429.16/647,215.56
  6. Step 6: Final answer
    x = 497,842.56

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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.