Home / 645,142,436.80-967,713,655.20-578,629,643.20

Finding the Fourth Proportional to 645,142,436.80, 967,713,655.20 and 578,629,643.20

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Solution

The fourth proportional to 645,142,436.80, 967,713,655.20 and 578,629,643.20 is: 867,944,464.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,142,436.80 : 967,713,655.20 = 578,629,643.20 : x
  2. Step 2: Convert to fraction form
    645,142,436.80/967,713,655.20 = 578,629,643.20/x
  3. Step 3: Cross multiply
    645,142,436.80x = 967,713,655.20 × 578,629,643.20
  4. Step 4: Simplify right side
    645,142,436.80x = 559,947,807,028,143,872
  5. Step 5: Solve for x
    x = 559,947,807,028,143,872/645,142,436.80
  6. Step 6: Final answer
    x = 867,944,464.80

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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.