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Finding the Fourth Proportional to 538,413.90, 807,620.85 and 370,452.30

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Solution

The fourth proportional to 538,413.90, 807,620.85 and 370,452.30 is: 555,678.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,413.90 : 807,620.85 = 370,452.30 : x
  2. Step 2: Convert to fraction form
    538,413.90/807,620.85 = 370,452.30/x
  3. Step 3: Cross multiply
    538,413.90x = 807,620.85 × 370,452.30
  4. Step 4: Simplify right side
    538,413.90x = 299,185,001,410.46
  5. Step 5: Solve for x
    x = 299,185,001,410.46/538,413.90
  6. Step 6: Final answer
    x = 555,678.45

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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.