Home / 402,930,688.40-604,396,032.60-393,972,736.40

Finding the Fourth Proportional to 402,930,688.40, 604,396,032.60 and 393,972,736.40

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Solution

The fourth proportional to 402,930,688.40, 604,396,032.60 and 393,972,736.40 is: 590,959,104.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,930,688.40 : 604,396,032.60 = 393,972,736.40 : x
  2. Step 2: Convert to fraction form
    402,930,688.40/604,396,032.60 = 393,972,736.40/x
  3. Step 3: Cross multiply
    402,930,688.40x = 604,396,032.60 × 393,972,736.40
  4. Step 4: Simplify right side
    402,930,688.40x = 238,115,558,832,725,600
  5. Step 5: Solve for x
    x = 238,115,558,832,725,600/402,930,688.40
  6. Step 6: Final answer
    x = 590,959,104.60

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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.