Home / 492,148,308.40-738,222,462.60-128,642,664.40

Finding the Fourth Proportional to 492,148,308.40, 738,222,462.60 and 128,642,664.40

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Solution

The fourth proportional to 492,148,308.40, 738,222,462.60 and 128,642,664.40 is: 192,963,996.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,148,308.40 : 738,222,462.60 = 128,642,664.40 : x
  2. Step 2: Convert to fraction form
    492,148,308.40/738,222,462.60 = 128,642,664.40/x
  3. Step 3: Cross multiply
    492,148,308.40x = 738,222,462.60 × 128,642,664.40
  4. Step 4: Simplify right side
    492,148,308.40x = 94,966,904,508,793,360
  5. Step 5: Solve for x
    x = 94,966,904,508,793,360/492,148,308.40
  6. Step 6: Final answer
    x = 192,963,996.60

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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.