Home / 870,016,929.20-1,200,649,345.80-535,682,331.08

Finding the Fourth Proportional to 870,016,929.20, 1,200,649,345.80 and 535,682,331.08

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Solution

The fourth proportional to 870,016,929.20, 1,200,649,345.80 and 535,682,331.08 is: 739,257,615.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,016,929.20 : 1,200,649,345.80 = 535,682,331.08 : x
  2. Step 2: Convert to fraction form
    870,016,929.20/1,200,649,345.80 = 535,682,331.08/x
  3. Step 3: Cross multiply
    870,016,929.20x = 1,200,649,345.80 × 535,682,331.08
  4. Step 4: Simplify right side
    870,016,929.20x = 643,166,640,367,820,928
  5. Step 5: Solve for x
    x = 643,166,640,367,820,928/870,016,929.20
  6. Step 6: Final answer
    x = 739,257,615.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.