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Finding the Fourth Proportional to 506,679.62, 698,413.93 and 399,079.22

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Solution

The fourth proportional to 506,679.62, 698,413.93 and 399,079.22 is: 550,096.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,679.62 : 698,413.93 = 399,079.22 : x
  2. Step 2: Convert to fraction form
    506,679.62/698,413.93 = 399,079.22/x
  3. Step 3: Cross multiply
    506,679.62x = 698,413.93 × 399,079.22
  4. Step 4: Simplify right side
    506,679.62x = 278,722,481,931.77
  5. Step 5: Solve for x
    x = 278,722,481,931.77/506,679.62
  6. Step 6: Final answer
    x = 550,096.10

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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.