Home / 647,220.87-893,128.38-356,822.81

Finding the Fourth Proportional to 647,220.87, 893,128.38 and 356,822.81

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Solution

The fourth proportional to 647,220.87, 893,128.38 and 356,822.81 is: 492,395.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,220.87 : 893,128.38 = 356,822.81 : x
  2. Step 2: Convert to fraction form
    647,220.87/893,128.38 = 356,822.81/x
  3. Step 3: Cross multiply
    647,220.87x = 893,128.38 × 356,822.81
  4. Step 4: Simplify right side
    647,220.87x = 318,688,573,776.71
  5. Step 5: Solve for x
    x = 318,688,573,776.71/647,220.87
  6. Step 6: Final answer
    x = 492,395.39

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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.