Home / 985,704.30-1,478,556.45-513,312.30

Finding the Fourth Proportional to 985,704.30, 1,478,556.45 and 513,312.30

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Solution

The fourth proportional to 985,704.30, 1,478,556.45 and 513,312.30 is: 769,968.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,704.30 : 1,478,556.45 = 513,312.30 : x
  2. Step 2: Convert to fraction form
    985,704.30/1,478,556.45 = 513,312.30/x
  3. Step 3: Cross multiply
    985,704.30x = 1,478,556.45 × 513,312.30
  4. Step 4: Simplify right side
    985,704.30x = 758,961,212,029.34
  5. Step 5: Solve for x
    x = 758,961,212,029.34/985,704.30
  6. Step 6: Final answer
    x = 769,968.45

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Half scale
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Double scale
Find fourth proportional to 985,705.30, 1,478,557.95 and 513,313.30
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.