Home / 513,131,920.67-708,174,829.15-312,203,059.57

Finding the Fourth Proportional to 513,131,920.67, 708,174,829.15 and 312,203,059.57

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Solution

The fourth proportional to 513,131,920.67, 708,174,829.15 and 312,203,059.57 is: 430,872,334.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,131,920.67 : 708,174,829.15 = 312,203,059.57 : x
  2. Step 2: Convert to fraction form
    513,131,920.67/708,174,829.15 = 312,203,059.57/x
  3. Step 3: Cross multiply
    513,131,920.67x = 708,174,829.15 × 312,203,059.57
  4. Step 4: Simplify right side
    513,131,920.67x = 221,094,348,368,578,784
  5. Step 5: Solve for x
    x = 221,094,348,368,578,784/513,131,920.67
  6. Step 6: Final answer
    x = 430,872,334.12

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.