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Finding the Fourth Proportional to 607,256.82, 909,888.20 and 207,679.58

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Solution

The fourth proportional to 607,256.82, 909,888.20 and 207,679.58 is: 311,178.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,256.82 : 909,888.20 = 207,679.58 : x
  2. Step 2: Convert to fraction form
    607,256.82/909,888.20 = 207,679.58/x
  3. Step 3: Cross multiply
    607,256.82x = 909,888.20 × 207,679.58
  4. Step 4: Simplify right side
    607,256.82x = 188,965,199,222.96
  5. Step 5: Solve for x
    x = 188,965,199,222.96/607,256.82
  6. Step 6: Final answer
    x = 311,178.39

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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.