Home / 856,686.39-1,284,697.36-457,109.16

Finding the Fourth Proportional to 856,686.39, 1,284,697.36 and 457,109.16

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Solution

The fourth proportional to 856,686.39, 1,284,697.36 and 457,109.16 is: 685,486.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,686.39 : 1,284,697.36 = 457,109.16 : x
  2. Step 2: Convert to fraction form
    856,686.39/1,284,697.36 = 457,109.16/x
  3. Step 3: Cross multiply
    856,686.39x = 1,284,697.36 × 457,109.16
  4. Step 4: Simplify right side
    856,686.39x = 587,246,931,083.82
  5. Step 5: Solve for x
    x = 587,246,931,083.82/856,686.39
  6. Step 6: Final answer
    x = 685,486.47

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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.