Home / 693,419.60-1,040,129.40-613,240.40

Finding the Fourth Proportional to 693,419.60, 1,040,129.40 and 613,240.40

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Solution

The fourth proportional to 693,419.60, 1,040,129.40 and 613,240.40 is: 919,860.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,419.60 : 1,040,129.40 = 613,240.40 : x
  2. Step 2: Convert to fraction form
    693,419.60/1,040,129.40 = 613,240.40/x
  3. Step 3: Cross multiply
    693,419.60x = 1,040,129.40 × 613,240.40
  4. Step 4: Simplify right side
    693,419.60x = 637,849,369,307.76
  5. Step 5: Solve for x
    x = 637,849,369,307.76/693,419.60
  6. Step 6: Final answer
    x = 919,860.60

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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.