Home / 870,428,246.40-1,305,642,369.60-578,348,272.80

Finding the Fourth Proportional to 870,428,246.40, 1,305,642,369.60 and 578,348,272.80

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Solution

The fourth proportional to 870,428,246.40, 1,305,642,369.60 and 578,348,272.80 is: 867,522,409.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,428,246.40 : 1,305,642,369.60 = 578,348,272.80 : x
  2. Step 2: Convert to fraction form
    870,428,246.40/1,305,642,369.60 = 578,348,272.80/x
  3. Step 3: Cross multiply
    870,428,246.40x = 1,305,642,369.60 × 578,348,272.80
  4. Step 4: Simplify right side
    870,428,246.40x = 755,116,009,352,659,072
  5. Step 5: Solve for x
    x = 755,116,009,352,659,072/870,428,246.40
  6. Step 6: Final answer
    x = 867,522,409.20

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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.