Home / 658,977.60-988,466.40-393,038.40

Finding the Fourth Proportional to 658,977.60, 988,466.40 and 393,038.40

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Solution

The fourth proportional to 658,977.60, 988,466.40 and 393,038.40 is: 589,557.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,977.60 : 988,466.40 = 393,038.40 : x
  2. Step 2: Convert to fraction form
    658,977.60/988,466.40 = 393,038.40/x
  3. Step 3: Cross multiply
    658,977.60x = 988,466.40 × 393,038.40
  4. Step 4: Simplify right side
    658,977.60x = 388,505,252,309.76
  5. Step 5: Solve for x
    x = 388,505,252,309.76/658,977.60
  6. Step 6: Final answer
    x = 589,557.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.