Home / 890,721,543.87-1,336,038,859.20-330,592,361.78

Finding the Fourth Proportional to 890,721,543.87, 1,336,038,859.20 and 330,592,361.78

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Solution

The fourth proportional to 890,721,543.87, 1,336,038,859.20 and 330,592,361.78 is: 495,872,413.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,721,543.87 : 1,336,038,859.20 = 330,592,361.78 : x
  2. Step 2: Convert to fraction form
    890,721,543.87/1,336,038,859.20 = 330,592,361.78/x
  3. Step 3: Cross multiply
    890,721,543.87x = 1,336,038,859.20 × 330,592,361.78
  4. Step 4: Simplify right side
    890,721,543.87x = 441,684,241,897,381,248
  5. Step 5: Solve for x
    x = 441,684,241,897,381,248/890,721,543.87
  6. Step 6: Final answer
    x = 495,872,413.70

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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.