Home / 885,778.36-1,222,412.85-498,618.77

Finding the Fourth Proportional to 885,778.36, 1,222,412.85 and 498,618.77

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Solution

The fourth proportional to 885,778.36, 1,222,412.85 and 498,618.77 is: 688,115.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,778.36 : 1,222,412.85 = 498,618.77 : x
  2. Step 2: Convert to fraction form
    885,778.36/1,222,412.85 = 498,618.77/x
  3. Step 3: Cross multiply
    885,778.36x = 1,222,412.85 × 498,618.77
  4. Step 4: Simplify right side
    885,778.36x = 609,517,991,699.20
  5. Step 5: Solve for x
    x = 609,517,991,699.20/885,778.36
  6. Step 6: Final answer
    x = 688,115.69

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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.