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Finding the Fourth Proportional to 546,918.80, 820,378.20 and 436,326.80

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Solution

The fourth proportional to 546,918.80, 820,378.20 and 436,326.80 is: 654,490.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    546,918.80 : 820,378.20 = 436,326.80 : x
  2. Step 2: Convert to fraction form
    546,918.80/820,378.20 = 436,326.80/x
  3. Step 3: Cross multiply
    546,918.80x = 820,378.20 × 436,326.80
  4. Step 4: Simplify right side
    546,918.80x = 357,952,994,795.76
  5. Step 5: Solve for x
    x = 357,952,994,795.76/546,918.80
  6. Step 6: Final answer
    x = 654,490.20

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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.