Home / 656,369,100.39-906,068,258.78-408,972,686.07

Finding the Fourth Proportional to 656,369,100.39, 906,068,258.78 and 408,972,686.07

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Solution

The fourth proportional to 656,369,100.39, 906,068,258.78 and 408,972,686.07 is: 564,556,084.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,369,100.39 : 906,068,258.78 = 408,972,686.07 : x
  2. Step 2: Convert to fraction form
    656,369,100.39/906,068,258.78 = 408,972,686.07/x
  3. Step 3: Cross multiply
    656,369,100.39x = 906,068,258.78 × 408,972,686.07
  4. Step 4: Simplify right side
    656,369,100.39x = 370,557,169,553,979,584
  5. Step 5: Solve for x
    x = 370,557,169,553,979,584/656,369,100.39
  6. Step 6: Final answer
    x = 564,556,084.88

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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.