Home / 686,048.66-1,028,887.09-286,605.86

Finding the Fourth Proportional to 686,048.66, 1,028,887.09 and 286,605.86

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Solution

The fourth proportional to 686,048.66, 1,028,887.09 and 286,605.86 is: 429,831.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,048.66 : 1,028,887.09 = 286,605.86 : x
  2. Step 2: Convert to fraction form
    686,048.66/1,028,887.09 = 286,605.86/x
  3. Step 3: Cross multiply
    686,048.66x = 1,028,887.09 × 286,605.86
  4. Step 4: Simplify right side
    686,048.66x = 294,885,071,128.05
  5. Step 5: Solve for x
    x = 294,885,071,128.05/686,048.66
  6. Step 6: Final answer
    x = 429,831.13

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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.