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Finding the Fourth Proportional to 446,876.60, 670,314.90 and 287,444.30

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Solution

The fourth proportional to 446,876.60, 670,314.90 and 287,444.30 is: 431,166.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,876.60 : 670,314.90 = 287,444.30 : x
  2. Step 2: Convert to fraction form
    446,876.60/670,314.90 = 287,444.30/x
  3. Step 3: Cross multiply
    446,876.60x = 670,314.90 × 287,444.30
  4. Step 4: Simplify right side
    446,876.60x = 192,678,197,210.07
  5. Step 5: Solve for x
    x = 192,678,197,210.07/446,876.60
  6. Step 6: Final answer
    x = 431,166.45

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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.