Home / 513,062,585.78-708,021,071.80-286,998,639.19

Finding the Fourth Proportional to 513,062,585.78, 708,021,071.80 and 286,998,639.19

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Solution

The fourth proportional to 513,062,585.78, 708,021,071.80 and 286,998,639.19 is: 396,055,159.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,062,585.78 : 708,021,071.80 = 286,998,639.19 : x
  2. Step 2: Convert to fraction form
    513,062,585.78/708,021,071.80 = 286,998,639.19/x
  3. Step 3: Cross multiply
    513,062,585.78x = 708,021,071.80 × 286,998,639.19
  4. Step 4: Simplify right side
    513,062,585.78x = 203,201,084,121,957,728
  5. Step 5: Solve for x
    x = 203,201,084,121,957,728/513,062,585.78
  6. Step 6: Final answer
    x = 396,055,159.26

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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.