Home / 828,856.56-1,243,678.50-429,422.88

Finding the Fourth Proportional to 828,856.56, 1,243,678.50 and 429,422.88

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Solution

The fourth proportional to 828,856.56, 1,243,678.50 and 429,422.88 is: 644,338.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,856.56 : 1,243,678.50 = 429,422.88 : x
  2. Step 2: Convert to fraction form
    828,856.56/1,243,678.50 = 429,422.88/x
  3. Step 3: Cross multiply
    828,856.56x = 1,243,678.50 × 429,422.88
  4. Step 4: Simplify right side
    828,856.56x = 534,064,003,264.08
  5. Step 5: Solve for x
    x = 534,064,003,264.08/828,856.56
  6. Step 6: Final answer
    x = 644,338.27

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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.