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Finding the Fourth Proportional to 907,608.60, 1,361,412.90 and 609,010.20

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Solution

The fourth proportional to 907,608.60, 1,361,412.90 and 609,010.20 is: 913,515.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,608.60 : 1,361,412.90 = 609,010.20 : x
  2. Step 2: Convert to fraction form
    907,608.60/1,361,412.90 = 609,010.20/x
  3. Step 3: Cross multiply
    907,608.60x = 1,361,412.90 × 609,010.20
  4. Step 4: Simplify right side
    907,608.60x = 829,114,342,511.58
  5. Step 5: Solve for x
    x = 829,114,342,511.58/907,608.60
  6. Step 6: Final answer
    x = 913,515.30

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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.