Home / 916,487.08-1,374,730.52-285,450.10

Finding the Fourth Proportional to 916,487.08, 1,374,730.52 and 285,450.10

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Solution

The fourth proportional to 916,487.08, 1,374,730.52 and 285,450.10 is: 428,175.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,487.08 : 1,374,730.52 = 285,450.10 : x
  2. Step 2: Convert to fraction form
    916,487.08/1,374,730.52 = 285,450.10/x
  3. Step 3: Cross multiply
    916,487.08x = 1,374,730.52 × 285,450.10
  4. Step 4: Simplify right side
    916,487.08x = 392,416,959,542.98
  5. Step 5: Solve for x
    x = 392,416,959,542.98/916,487.08
  6. Step 6: Final answer
    x = 428,175.11

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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.