Home / 671,449.12-926,724.08-384,971.20

Finding the Fourth Proportional to 671,449.12, 926,724.08 and 384,971.20

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Solution

The fourth proportional to 671,449.12, 926,724.08 and 384,971.20 is: 531,331.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,449.12 : 926,724.08 = 384,971.20 : x
  2. Step 2: Convert to fraction form
    671,449.12/926,724.08 = 384,971.20/x
  3. Step 3: Cross multiply
    671,449.12x = 926,724.08 × 384,971.20
  4. Step 4: Simplify right side
    671,449.12x = 356,762,081,146.50
  5. Step 5: Solve for x
    x = 356,762,081,146.50/671,449.12
  6. Step 6: Final answer
    x = 531,331.52

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Half scale
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Double scale
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Similar ratio
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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.