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Finding the Fourth Proportional to 478,616.71, 660,491.06 and 263,756.78

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Solution

The fourth proportional to 478,616.71, 660,491.06 and 263,756.78 is: 363,984.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,616.71 : 660,491.06 = 263,756.78 : x
  2. Step 2: Convert to fraction form
    478,616.71/660,491.06 = 263,756.78/x
  3. Step 3: Cross multiply
    478,616.71x = 660,491.06 × 263,756.78
  4. Step 4: Simplify right side
    478,616.71x = 174,208,995,204.39
  5. Step 5: Solve for x
    x = 174,208,995,204.39/478,616.71
  6. Step 6: Final answer
    x = 363,984.36

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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.