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Finding the Fourth Proportional to 618,652.98, 853,751.21 and 346,781.34

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Solution

The fourth proportional to 618,652.98, 853,751.21 and 346,781.34 is: 478,563.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,652.98 : 853,751.21 = 346,781.34 : x
  2. Step 2: Convert to fraction form
    618,652.98/853,751.21 = 346,781.34/x
  3. Step 3: Cross multiply
    618,652.98x = 853,751.21 × 346,781.34
  4. Step 4: Simplify right side
    618,652.98x = 296,064,986,896.52
  5. Step 5: Solve for x
    x = 296,064,986,896.52/618,652.98
  6. Step 6: Final answer
    x = 478,563.91

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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.