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Finding the Fourth Proportional to 563,358.88, 777,421.84 and 308,697.76

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Solution

The fourth proportional to 563,358.88, 777,421.84 and 308,697.76 is: 425,995.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,358.88 : 777,421.84 = 308,697.76 : x
  2. Step 2: Convert to fraction form
    563,358.88/777,421.84 = 308,697.76/x
  3. Step 3: Cross multiply
    563,358.88x = 777,421.84 × 308,697.76
  4. Step 4: Simplify right side
    563,358.88x = 239,988,380,583.08
  5. Step 5: Solve for x
    x = 239,988,380,583.08/563,358.88
  6. Step 6: Final answer
    x = 425,995.56

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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.