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Finding the Fourth Proportional to 620,058.55, 855,614.69 and 348,156.13

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Solution

The fourth proportional to 620,058.55, 855,614.69 and 348,156.13 is: 480,418.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,058.55 : 855,614.69 = 348,156.13 : x
  2. Step 2: Convert to fraction form
    620,058.55/855,614.69 = 348,156.13/x
  3. Step 3: Cross multiply
    620,058.55x = 855,614.69 × 348,156.13
  4. Step 4: Simplify right side
    620,058.55x = 297,887,494,963.48
  5. Step 5: Solve for x
    x = 297,887,494,963.48/620,058.55
  6. Step 6: Final answer
    x = 480,418.34

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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.