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Finding the Fourth Proportional to 761,840, 1,143,134.62 and 306,413.18

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Solution

The fourth proportional to 761,840, 1,143,134.62 and 306,413.18 is: 459,770.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,840 : 1,143,134.62 = 306,413.18 : x
  2. Step 2: Convert to fraction form
    761,840/1,143,134.62 = 306,413.18/x
  3. Step 3: Cross multiply
    761,840x = 1,143,134.62 × 306,413.18
  4. Step 4: Simplify right side
    761,840x = 350,271,514,082.29
  5. Step 5: Solve for x
    x = 350,271,514,082.29/761,840
  6. Step 6: Final answer
    x = 459,770.44

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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.