Home / 898,690,828.80-1,348,036,243.20-438,923,942.40

Finding the Fourth Proportional to 898,690,828.80, 1,348,036,243.20 and 438,923,942.40

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Solution

The fourth proportional to 898,690,828.80, 1,348,036,243.20 and 438,923,942.40 is: 658,385,913.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,690,828.80 : 1,348,036,243.20 = 438,923,942.40 : x
  2. Step 2: Convert to fraction form
    898,690,828.80/1,348,036,243.20 = 438,923,942.40/x
  3. Step 3: Cross multiply
    898,690,828.80x = 1,348,036,243.20 × 438,923,942.40
  4. Step 4: Simplify right side
    898,690,828.80x = 591,685,382,363,429,120
  5. Step 5: Solve for x
    x = 591,685,382,363,429,120/898,690,828.80
  6. Step 6: Final answer
    x = 658,385,913.60

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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.