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Finding the Fourth Proportional to 518,598.77, 777,890.44 and 316,254.34

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Solution

The fourth proportional to 518,598.77, 777,890.44 and 316,254.34 is: 474,376.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,598.77 : 777,890.44 = 316,254.34 : x
  2. Step 2: Convert to fraction form
    518,598.77/777,890.44 = 316,254.34/x
  3. Step 3: Cross multiply
    518,598.77x = 777,890.44 × 316,254.34
  4. Step 4: Simplify right side
    518,598.77x = 246,011,224,959.15
  5. Step 5: Solve for x
    x = 246,011,224,959.15/518,598.77
  6. Step 6: Final answer
    x = 474,376.80

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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.