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Finding the Fourth Proportional to 508,445.36, 701,983.30 and 315,058.29

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Solution

The fourth proportional to 508,445.36, 701,983.30 and 315,058.29 is: 434,984.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,445.36 : 701,983.30 = 315,058.29 : x
  2. Step 2: Convert to fraction form
    508,445.36/701,983.30 = 315,058.29/x
  3. Step 3: Cross multiply
    508,445.36x = 701,983.30 × 315,058.29
  4. Step 4: Simplify right side
    508,445.36x = 221,165,657,318.91
  5. Step 5: Solve for x
    x = 221,165,657,318.91/508,445.36
  6. Step 6: Final answer
    x = 434,984.12

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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.