Home / 492,084,955.20-738,071,445.60-128,616,052.80

Finding the Fourth Proportional to 492,084,955.20, 738,071,445.60 and 128,616,052.80

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Solution

The fourth proportional to 492,084,955.20, 738,071,445.60 and 128,616,052.80 is: 192,909,445.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,084,955.20 : 738,071,445.60 = 128,616,052.80 : x
  2. Step 2: Convert to fraction form
    492,084,955.20/738,071,445.60 = 128,616,052.80/x
  3. Step 3: Cross multiply
    492,084,955.20x = 738,071,445.60 × 128,616,052.80
  4. Step 4: Simplify right side
    492,084,955.20x = 94,927,836,017,461,936
  5. Step 5: Solve for x
    x = 94,927,836,017,461,936/492,084,955.20
  6. Step 6: Final answer
    x = 192,909,445.85

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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.