Home / 287,893,639.26-396,880,005.15-205,243,934.94

Finding the Fourth Proportional to 287,893,639.26, 396,880,005.15 and 205,243,934.94

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Solution

The fourth proportional to 287,893,639.26, 396,880,005.15 and 205,243,934.94 is: 282,942,041.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,893,639.26 : 396,880,005.15 = 205,243,934.94 : x
  2. Step 2: Convert to fraction form
    287,893,639.26/396,880,005.15 = 205,243,934.94/x
  3. Step 3: Cross multiply
    287,893,639.26x = 396,880,005.15 × 205,243,934.94
  4. Step 4: Simplify right side
    287,893,639.26x = 81,457,213,955,993,456
  5. Step 5: Solve for x
    x = 81,457,213,955,993,456/287,893,639.26
  6. Step 6: Final answer
    x = 282,942,041.25

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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.