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Finding the Fourth Proportional to 567,998.21, 783,837.48 and 313,349.40

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Solution

The fourth proportional to 567,998.21, 783,837.48 and 313,349.40 is: 432,422.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,998.21 : 783,837.48 = 313,349.40 : x
  2. Step 2: Convert to fraction form
    567,998.21/783,837.48 = 313,349.40/x
  3. Step 3: Cross multiply
    567,998.21x = 783,837.48 × 313,349.40
  4. Step 4: Simplify right side
    567,998.21x = 245,615,004,055.51
  5. Step 5: Solve for x
    x = 245,615,004,055.51/567,998.21
  6. Step 6: Final answer
    x = 432,422.15

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1.5x scale

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.