Home / 645,141,311.80-967,711,967.70-578,628,518.20

Finding the Fourth Proportional to 645,141,311.80, 967,711,967.70 and 578,628,518.20

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Solution

The fourth proportional to 645,141,311.80, 967,711,967.70 and 578,628,518.20 is: 867,942,777.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,141,311.80 : 967,711,967.70 = 578,628,518.20 : x
  2. Step 2: Convert to fraction form
    645,141,311.80/967,711,967.70 = 578,628,518.20/x
  3. Step 3: Cross multiply
    645,141,311.80x = 967,711,967.70 × 578,628,518.20
  4. Step 4: Simplify right side
    645,141,311.80x = 559,945,741,914,657,344
  5. Step 5: Solve for x
    x = 559,945,741,914,657,344/645,141,311.80
  6. Step 6: Final answer
    x = 867,942,777.30

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Double scale
Find fourth proportional to 645,141,312.80, 967,711,969.20 and 578,628,519.20
Similar ratio
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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.