Home / 872,844,643.60-1,309,266,965.40-778,141,857.40

Finding the Fourth Proportional to 872,844,643.60, 1,309,266,965.40 and 778,141,857.40

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Solution

The fourth proportional to 872,844,643.60, 1,309,266,965.40 and 778,141,857.40 is: 1,167,212,786.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,844,643.60 : 1,309,266,965.40 = 778,141,857.40 : x
  2. Step 2: Convert to fraction form
    872,844,643.60/1,309,266,965.40 = 778,141,857.40/x
  3. Step 3: Cross multiply
    872,844,643.60x = 1,309,266,965.40 × 778,141,857.40
  4. Step 4: Simplify right side
    872,844,643.60x = 1,018,795,428,288,817,536
  5. Step 5: Solve for x
    x = 1,018,795,428,288,817,536/872,844,643.60
  6. Step 6: Final answer
    x = 1,167,212,786.10

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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.