Home / 518,275,431.79-711,413,009.75-458,222,598.79

Finding the Fourth Proportional to 518,275,431.79, 711,413,009.75 and 458,222,598.79

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Solution

The fourth proportional to 518,275,431.79, 711,413,009.75 and 458,222,598.79 is: 628,981,229.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,275,431.79 : 711,413,009.75 = 458,222,598.79 : x
  2. Step 2: Convert to fraction form
    518,275,431.79/711,413,009.75 = 458,222,598.79/x
  3. Step 3: Cross multiply
    518,275,431.79x = 711,413,009.75 × 458,222,598.79
  4. Step 4: Simplify right side
    518,275,431.79x = 325,985,518,137,461,568
  5. Step 5: Solve for x
    x = 325,985,518,137,461,568/518,275,431.79
  6. Step 6: Final answer
    x = 628,981,229.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.