Home / 525,885,711.40-787,316,912.70-321,812,367.40

Finding the Fourth Proportional to 525,885,711.40, 787,316,912.70 and 321,812,367.40

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Solution

The fourth proportional to 525,885,711.40, 787,316,912.70 and 321,812,367.40 is: 481,793,503.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,885,711.40 : 787,316,912.70 = 321,812,367.40 : x
  2. Step 2: Convert to fraction form
    525,885,711.40/787,316,912.70 = 321,812,367.40/x
  3. Step 3: Cross multiply
    525,885,711.40x = 787,316,912.70 × 321,812,367.40
  4. Step 4: Simplify right side
    525,885,711.40x = 253,368,319,570,046,112
  5. Step 5: Solve for x
    x = 253,368,319,570,046,112/525,885,711.40
  6. Step 6: Final answer
    x = 481,793,503.95

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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.