Home / 885,725.20-1,328,587.80-413,333.20

Finding the Fourth Proportional to 885,725.20, 1,328,587.80 and 413,333.20

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Solution

The fourth proportional to 885,725.20, 1,328,587.80 and 413,333.20 is: 619,999.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,725.20 : 1,328,587.80 = 413,333.20 : x
  2. Step 2: Convert to fraction form
    885,725.20/1,328,587.80 = 413,333.20/x
  3. Step 3: Cross multiply
    885,725.20x = 1,328,587.80 × 413,333.20
  4. Step 4: Simplify right side
    885,725.20x = 549,149,446,854.96
  5. Step 5: Solve for x
    x = 549,149,446,854.96/885,725.20
  6. Step 6: Final answer
    x = 619,999.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.