Home / 856,468.20-1,283,319.90-540,359.40

Finding the Fourth Proportional to 856,468.20, 1,283,319.90 and 540,359.40

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Solution

The fourth proportional to 856,468.20, 1,283,319.90 and 540,359.40 is: 809,666.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,468.20 : 1,283,319.90 = 540,359.40 : x
  2. Step 2: Convert to fraction form
    856,468.20/1,283,319.90 = 540,359.40/x
  3. Step 3: Cross multiply
    856,468.20x = 1,283,319.90 × 540,359.40
  4. Step 4: Simplify right side
    856,468.20x = 693,453,971,172.06
  5. Step 5: Solve for x
    x = 693,453,971,172.06/856,468.20
  6. Step 6: Final answer
    x = 809,666.92

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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.