Home / 828,923,065.60-1,241,746,972.80-420,272,492.80

Finding the Fourth Proportional to 828,923,065.60, 1,241,746,972.80 and 420,272,492.80

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Solution

The fourth proportional to 828,923,065.60, 1,241,746,972.80 and 420,272,492.80 is: 629,578,446.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,923,065.60 : 1,241,746,972.80 = 420,272,492.80 : x
  2. Step 2: Convert to fraction form
    828,923,065.60/1,241,746,972.80 = 420,272,492.80/x
  3. Step 3: Cross multiply
    828,923,065.60x = 1,241,746,972.80 × 420,272,492.80
  4. Step 4: Simplify right side
    828,923,065.60x = 521,872,095,685,509,760
  5. Step 5: Solve for x
    x = 521,872,095,685,509,760/828,923,065.60
  6. Step 6: Final answer
    x = 629,578,446.23

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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.