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Finding the Fourth Proportional to 493,413.72, 680,927.42 and 302,390.20

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Solution

The fourth proportional to 493,413.72, 680,927.42 and 302,390.20 is: 417,308.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,413.72 : 680,927.42 = 302,390.20 : x
  2. Step 2: Convert to fraction form
    493,413.72/680,927.42 = 302,390.20/x
  3. Step 3: Cross multiply
    493,413.72x = 680,927.42 × 302,390.20
  4. Step 4: Simplify right side
    493,413.72x = 205,905,778,719.28
  5. Step 5: Solve for x
    x = 205,905,778,719.28/493,413.72
  6. Step 6: Final answer
    x = 417,308.58

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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.