Home / 890,185.15-1,228,456.20-522,590.34

Finding the Fourth Proportional to 890,185.15, 1,228,456.20 and 522,590.34

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Solution

The fourth proportional to 890,185.15, 1,228,456.20 and 522,590.34 is: 721,175.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,185.15 : 1,228,456.20 = 522,590.34 : x
  2. Step 2: Convert to fraction form
    890,185.15/1,228,456.20 = 522,590.34/x
  3. Step 3: Cross multiply
    890,185.15x = 1,228,456.20 × 522,590.34
  4. Step 4: Simplify right side
    890,185.15x = 641,979,343,233.11
  5. Step 5: Solve for x
    x = 641,979,343,233.11/890,185.15
  6. Step 6: Final answer
    x = 721,175.08

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Half scale
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Double scale
Find fourth proportional to 890,186.15, 1,228,457.58 and 522,591.34
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.