Home / 830,404.90-1,245,607.35-410,500.90

Finding the Fourth Proportional to 830,404.90, 1,245,607.35 and 410,500.90

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Solution

The fourth proportional to 830,404.90, 1,245,607.35 and 410,500.90 is: 615,751.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,404.90 : 1,245,607.35 = 410,500.90 : x
  2. Step 2: Convert to fraction form
    830,404.90/1,245,607.35 = 410,500.90/x
  3. Step 3: Cross multiply
    830,404.90x = 1,245,607.35 × 410,500.90
  4. Step 4: Simplify right side
    830,404.90x = 511,322,938,221.62
  5. Step 5: Solve for x
    x = 511,322,938,221.62/830,404.90
  6. Step 6: Final answer
    x = 615,751.35

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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.