Home / 563,118.16-777,103.20-308,478.40

Finding the Fourth Proportional to 563,118.16, 777,103.20 and 308,478.40

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Solution

The fourth proportional to 563,118.16, 777,103.20 and 308,478.40 is: 425,700.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,118.16 : 777,103.20 = 308,478.40 : x
  2. Step 2: Convert to fraction form
    563,118.16/777,103.20 = 308,478.40/x
  3. Step 3: Cross multiply
    563,118.16x = 777,103.20 × 308,478.40
  4. Step 4: Simplify right side
    563,118.16x = 239,719,551,770.88
  5. Step 5: Solve for x
    x = 239,719,551,770.88/563,118.16
  6. Step 6: Final answer
    x = 425,700.27

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Double scale
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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.