Home / 711,042,947.76-1,065,596,015.85-400,298,781.36

Finding the Fourth Proportional to 711,042,947.76, 1,065,596,015.85 and 400,298,781.36

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Solution

The fourth proportional to 711,042,947.76, 1,065,596,015.85 and 400,298,781.36 is: 599,902,984.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,042,947.76 : 1,065,596,015.85 = 400,298,781.36 : x
  2. Step 2: Convert to fraction form
    711,042,947.76/1,065,596,015.85 = 400,298,781.36/x
  3. Step 3: Cross multiply
    711,042,947.76x = 1,065,596,015.85 × 400,298,781.36
  4. Step 4: Simplify right side
    711,042,947.76x = 426,556,786,566,826,240
  5. Step 5: Solve for x
    x = 426,556,786,566,826,240/711,042,947.76
  6. Step 6: Final answer
    x = 599,902,984.64

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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.