Home / 856,631.72-1,285,528.80-457,559.12

Finding the Fourth Proportional to 856,631.72, 1,285,528.80 and 457,559.12

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Solution

The fourth proportional to 856,631.72, 1,285,528.80 and 457,559.12 is: 686,649.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,631.72 : 1,285,528.80 = 457,559.12 : x
  2. Step 2: Convert to fraction form
    856,631.72/1,285,528.80 = 457,559.12/x
  3. Step 3: Cross multiply
    856,631.72x = 1,285,528.80 × 457,559.12
  4. Step 4: Simplify right side
    856,631.72x = 588,205,426,462.66
  5. Step 5: Solve for x
    x = 588,205,426,462.66/856,631.72
  6. Step 6: Final answer
    x = 686,649.13

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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.