Home / 760,863.08-1,140,536.35-380,623.06

Finding the Fourth Proportional to 760,863.08, 1,140,536.35 and 380,623.06

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Solution

The fourth proportional to 760,863.08, 1,140,536.35 and 380,623.06 is: 570,555.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,863.08 : 1,140,536.35 = 380,623.06 : x
  2. Step 2: Convert to fraction form
    760,863.08/1,140,536.35 = 380,623.06/x
  3. Step 3: Cross multiply
    760,863.08x = 1,140,536.35 × 380,623.06
  4. Step 4: Simplify right side
    760,863.08x = 434,114,435,578.23
  5. Step 5: Solve for x
    x = 434,114,435,578.23/760,863.08
  6. Step 6: Final answer
    x = 570,555.26

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.