Home / 670,355.60-1,005,533.40-639,251.60

Finding the Fourth Proportional to 670,355.60, 1,005,533.40 and 639,251.60

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Solution

The fourth proportional to 670,355.60, 1,005,533.40 and 639,251.60 is: 958,877.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,355.60 : 1,005,533.40 = 639,251.60 : x
  2. Step 2: Convert to fraction form
    670,355.60/1,005,533.40 = 639,251.60/x
  3. Step 3: Cross multiply
    670,355.60x = 1,005,533.40 × 639,251.60
  4. Step 4: Simplify right side
    670,355.60x = 642,788,834,803.44
  5. Step 5: Solve for x
    x = 642,788,834,803.44/670,355.60
  6. Step 6: Final answer
    x = 958,877.40

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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.