Home / 707,647,449.64-976,556,439.46-390,100,724.90

Finding the Fourth Proportional to 707,647,449.64, 976,556,439.46 and 390,100,724.90

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Solution

The fourth proportional to 707,647,449.64, 976,556,439.46 and 390,100,724.90 is: 538,340,631.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,647,449.64 : 976,556,439.46 = 390,100,724.90 : x
  2. Step 2: Convert to fraction form
    707,647,449.64/976,556,439.46 = 390,100,724.90/x
  3. Step 3: Cross multiply
    707,647,449.64x = 976,556,439.46 × 390,100,724.90
  4. Step 4: Simplify right side
    707,647,449.64x = 380,955,374,939,108,928
  5. Step 5: Solve for x
    x = 380,955,374,939,108,928/707,647,449.64
  6. Step 6: Final answer
    x = 538,340,631.53

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1.5x scale

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.