Home / 521,836,689.94-720,116,283.18-286,885,639.69

Finding the Fourth Proportional to 521,836,689.94, 720,116,283.18 and 286,885,639.69

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Solution

The fourth proportional to 521,836,689.94, 720,116,283.18 and 286,885,639.69 is: 395,892,095.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,836,689.94 : 720,116,283.18 = 286,885,639.69 : x
  2. Step 2: Convert to fraction form
    521,836,689.94/720,116,283.18 = 286,885,639.69/x
  3. Step 3: Cross multiply
    521,836,689.94x = 720,116,283.18 × 286,885,639.69
  4. Step 4: Simplify right side
    521,836,689.94x = 206,591,020,550,555,040
  5. Step 5: Solve for x
    x = 206,591,020,550,555,040/521,836,689.94
  6. Step 6: Final answer
    x = 395,892,095.24

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Why These Related Problems?

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