Home / 630,942.10-946,413.15-378,999.70

Finding the Fourth Proportional to 630,942.10, 946,413.15 and 378,999.70

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Solution

The fourth proportional to 630,942.10, 946,413.15 and 378,999.70 is: 568,499.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,942.10 : 946,413.15 = 378,999.70 : x
  2. Step 2: Convert to fraction form
    630,942.10/946,413.15 = 378,999.70/x
  3. Step 3: Cross multiply
    630,942.10x = 946,413.15 × 378,999.70
  4. Step 4: Simplify right side
    630,942.10x = 358,690,299,926.06
  5. Step 5: Solve for x
    x = 358,690,299,926.06/630,942.10
  6. Step 6: Final answer
    x = 568,499.55

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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.