Home / 692,905.60-1,038,580.80-393,529.60

Finding the Fourth Proportional to 692,905.60, 1,038,580.80 and 393,529.60

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Solution

The fourth proportional to 692,905.60, 1,038,580.80 and 393,529.60 is: 589,852.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,905.60 : 1,038,580.80 = 393,529.60 : x
  2. Step 2: Convert to fraction form
    692,905.60/1,038,580.80 = 393,529.60/x
  3. Step 3: Cross multiply
    692,905.60x = 1,038,580.80 × 393,529.60
  4. Step 4: Simplify right side
    692,905.60x = 408,712,286,791.68
  5. Step 5: Solve for x
    x = 408,712,286,791.68/692,905.60
  6. Step 6: Final answer
    x = 589,852.77

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1.5x scale

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.