Home / 519,243.60-778,865.40-239,307.60

Finding the Fourth Proportional to 519,243.60, 778,865.40 and 239,307.60

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Solution

The fourth proportional to 519,243.60, 778,865.40 and 239,307.60 is: 358,961.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,243.60 : 778,865.40 = 239,307.60 : x
  2. Step 2: Convert to fraction form
    519,243.60/778,865.40 = 239,307.60/x
  3. Step 3: Cross multiply
    519,243.60x = 778,865.40 × 239,307.60
  4. Step 4: Simplify right side
    519,243.60x = 186,388,409,597.04
  5. Step 5: Solve for x
    x = 186,388,409,597.04/519,243.60
  6. Step 6: Final answer
    x = 358,961.40

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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.