Home / 7,157,664-9,877,576.32-3,938,400

Finding the Fourth Proportional to 7,157,664, 9,877,576.32 and 3,938,400

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Solution

The fourth proportional to 7,157,664, 9,877,576.32 and 3,938,400 is: 5,434,992

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,157,664 : 9,877,576.32 = 3,938,400 : x
  2. Step 2: Convert to fraction form
    7,157,664/9,877,576.32 = 3,938,400/x
  3. Step 3: Cross multiply
    7,157,664x = 9,877,576.32 × 3,938,400
  4. Step 4: Simplify right side
    7,157,664x = 38,901,846,578,688
  5. Step 5: Solve for x
    x = 38,901,846,578,688/7,157,664
  6. Step 6: Final answer
    x = 5,434,992

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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.