Home / 645,140,839.80-967,711,259.70-578,628,046.20

Finding the Fourth Proportional to 645,140,839.80, 967,711,259.70 and 578,628,046.20

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Solution

The fourth proportional to 645,140,839.80, 967,711,259.70 and 578,628,046.20 is: 867,942,069.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,140,839.80 : 967,711,259.70 = 578,628,046.20 : x
  2. Step 2: Convert to fraction form
    645,140,839.80/967,711,259.70 = 578,628,046.20/x
  3. Step 3: Cross multiply
    645,140,839.80x = 967,711,259.70 × 578,628,046.20
  4. Step 4: Simplify right side
    645,140,839.80x = 559,944,875,485,951,872
  5. Step 5: Solve for x
    x = 559,944,875,485,951,872/645,140,839.80
  6. Step 6: Final answer
    x = 867,942,069.30

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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.