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Finding the Fourth Proportional to 439,501.60, 657,502.80 and 380,987.20

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Solution

The fourth proportional to 439,501.60, 657,502.80 and 380,987.20 is: 569,964.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,501.60 : 657,502.80 = 380,987.20 : x
  2. Step 2: Convert to fraction form
    439,501.60/657,502.80 = 380,987.20/x
  3. Step 3: Cross multiply
    439,501.60x = 657,502.80 × 380,987.20
  4. Step 4: Simplify right side
    439,501.60x = 250,500,150,764.16
  5. Step 5: Solve for x
    x = 250,500,150,764.16/439,501.60
  6. Step 6: Final answer
    x = 569,964.14

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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.