Home / 985,514.40-1,478,271.60-354,346.20

Finding the Fourth Proportional to 985,514.40, 1,478,271.60 and 354,346.20

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Solution

The fourth proportional to 985,514.40, 1,478,271.60 and 354,346.20 is: 531,519.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,514.40 : 1,478,271.60 = 354,346.20 : x
  2. Step 2: Convert to fraction form
    985,514.40/1,478,271.60 = 354,346.20/x
  3. Step 3: Cross multiply
    985,514.40x = 1,478,271.60 × 354,346.20
  4. Step 4: Simplify right side
    985,514.40x = 523,819,924,027.92
  5. Step 5: Solve for x
    x = 523,819,924,027.92/985,514.40
  6. Step 6: Final answer
    x = 531,519.30

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Double scale
Find fourth proportional to 985,515.40, 1,478,273.10 and 354,347.20
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.