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Finding the Fourth Proportional to 518,826.74, 778,725.30 and 319,535.96

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Solution

The fourth proportional to 518,826.74, 778,725.30 and 319,535.96 is: 479,602.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,826.74 : 778,725.30 = 319,535.96 : x
  2. Step 2: Convert to fraction form
    518,826.74/778,725.30 = 319,535.96/x
  3. Step 3: Cross multiply
    518,826.74x = 778,725.30 × 319,535.96
  4. Step 4: Simplify right side
    518,826.74x = 248,830,736,311.79
  5. Step 5: Solve for x
    x = 248,830,736,311.79/518,826.74
  6. Step 6: Final answer
    x = 479,602.76

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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.