Home / 864,100.40-1,296,150.60-490,852.40

Finding the Fourth Proportional to 864,100.40, 1,296,150.60 and 490,852.40

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Solution

The fourth proportional to 864,100.40, 1,296,150.60 and 490,852.40 is: 736,278.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,100.40 : 1,296,150.60 = 490,852.40 : x
  2. Step 2: Convert to fraction form
    864,100.40/1,296,150.60 = 490,852.40/x
  3. Step 3: Cross multiply
    864,100.40x = 1,296,150.60 × 490,852.40
  4. Step 4: Simplify right side
    864,100.40x = 636,218,632,771.44
  5. Step 5: Solve for x
    x = 636,218,632,771.44/864,100.40
  6. Step 6: Final answer
    x = 736,278.60

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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.