Home / 692,581.20-1,038,920.40-393,205.20

Finding the Fourth Proportional to 692,581.20, 1,038,920.40 and 393,205.20

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Solution

The fourth proportional to 692,581.20, 1,038,920.40 and 393,205.20 is: 589,835.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,581.20 : 1,038,920.40 = 393,205.20 : x
  2. Step 2: Convert to fraction form
    692,581.20/1,038,920.40 = 393,205.20/x
  3. Step 3: Cross multiply
    692,581.20x = 1,038,920.40 × 393,205.20
  4. Step 4: Simplify right side
    692,581.20x = 408,508,903,666.08
  5. Step 5: Solve for x
    x = 408,508,903,666.08/692,581.20
  6. Step 6: Final answer
    x = 589,835.39

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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.