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Finding the Fourth Proportional to 487,671.60, 683,206.80 and 487,671.60

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Solution

The fourth proportional to 487,671.60, 683,206.80 and 487,671.60 is: 683,206.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,671.60 : 683,206.80 = 487,671.60 : x
  2. Step 2: Convert to fraction form
    487,671.60/683,206.80 = 487,671.60/x
  3. Step 3: Cross multiply
    487,671.60x = 683,206.80 × 487,671.60
  4. Step 4: Simplify right side
    487,671.60x = 333,180,553,286.88
  5. Step 5: Solve for x
    x = 333,180,553,286.88/487,671.60
  6. Step 6: Final answer
    x = 683,206.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.