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Finding the Fourth Proportional to 522,057.40, 783,086.10 and 490,953.40

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Solution

The fourth proportional to 522,057.40, 783,086.10 and 490,953.40 is: 736,430.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,057.40 : 783,086.10 = 490,953.40 : x
  2. Step 2: Convert to fraction form
    522,057.40/783,086.10 = 490,953.40/x
  3. Step 3: Cross multiply
    522,057.40x = 783,086.10 × 490,953.40
  4. Step 4: Simplify right side
    522,057.40x = 384,458,783,287.74
  5. Step 5: Solve for x
    x = 384,458,783,287.74/522,057.40
  6. Step 6: Final answer
    x = 736,430.10

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Half scale
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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.