Home / 566,486.06-781,574.40-321,430.28

Finding the Fourth Proportional to 566,486.06, 781,574.40 and 321,430.28

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Solution

The fourth proportional to 566,486.06, 781,574.40 and 321,430.28 is: 443,473.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,486.06 : 781,574.40 = 321,430.28 : x
  2. Step 2: Convert to fraction form
    566,486.06/781,574.40 = 321,430.28/x
  3. Step 3: Cross multiply
    566,486.06x = 781,574.40 × 321,430.28
  4. Step 4: Simplify right side
    566,486.06x = 251,221,674,324.96
  5. Step 5: Solve for x
    x = 251,221,674,324.96/566,486.06
  6. Step 6: Final answer
    x = 443,473.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.