Home / 525,885,723.40-787,316,930.70-321,812,379.40

Finding the Fourth Proportional to 525,885,723.40, 787,316,930.70 and 321,812,379.40

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Solution

The fourth proportional to 525,885,723.40, 787,316,930.70 and 321,812,379.40 is: 481,793,521.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,885,723.40 : 787,316,930.70 = 321,812,379.40 : x
  2. Step 2: Convert to fraction form
    525,885,723.40/787,316,930.70 = 321,812,379.40/x
  3. Step 3: Cross multiply
    525,885,723.40x = 787,316,930.70 × 321,812,379.40
  4. Step 4: Simplify right side
    525,885,723.40x = 253,368,334,810,471,904
  5. Step 5: Solve for x
    x = 253,368,334,810,471,904/525,885,723.40
  6. Step 6: Final answer
    x = 481,793,521.93

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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.