Home / 693,141.60-1,039,712.40-393,506.40

Finding the Fourth Proportional to 693,141.60, 1,039,712.40 and 393,506.40

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Solution

The fourth proportional to 693,141.60, 1,039,712.40 and 393,506.40 is: 590,259.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,141.60 : 1,039,712.40 = 393,506.40 : x
  2. Step 2: Convert to fraction form
    693,141.60/1,039,712.40 = 393,506.40/x
  3. Step 3: Cross multiply
    693,141.60x = 1,039,712.40 × 393,506.40
  4. Step 4: Simplify right side
    693,141.60x = 409,133,483,559.36
  5. Step 5: Solve for x
    x = 409,133,483,559.36/693,141.60
  6. Step 6: Final answer
    x = 590,259.60

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Double scale
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Similar ratio
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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.