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Finding the Fourth Proportional to 572,010.60, 858,015.90 and 478,698.60

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Solution

The fourth proportional to 572,010.60, 858,015.90 and 478,698.60 is: 718,047.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,010.60 : 858,015.90 = 478,698.60 : x
  2. Step 2: Convert to fraction form
    572,010.60/858,015.90 = 478,698.60/x
  3. Step 3: Cross multiply
    572,010.60x = 858,015.90 × 478,698.60
  4. Step 4: Simplify right side
    572,010.60x = 410,731,010,107.74
  5. Step 5: Solve for x
    x = 410,731,010,107.74/572,010.60
  6. Step 6: Final answer
    x = 718,047.90

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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.