Home / 645,140,836.80-967,711,255.20-578,628,043.20

Finding the Fourth Proportional to 645,140,836.80, 967,711,255.20 and 578,628,043.20

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Solution

The fourth proportional to 645,140,836.80, 967,711,255.20 and 578,628,043.20 is: 867,942,064.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,140,836.80 : 967,711,255.20 = 578,628,043.20 : x
  2. Step 2: Convert to fraction form
    645,140,836.80/967,711,255.20 = 578,628,043.20/x
  3. Step 3: Cross multiply
    645,140,836.80x = 967,711,255.20 × 578,628,043.20
  4. Step 4: Simplify right side
    645,140,836.80x = 559,944,869,978,991,872
  5. Step 5: Solve for x
    x = 559,944,869,978,991,872/645,140,836.80
  6. Step 6: Final answer
    x = 867,942,064.80

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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.