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Finding the Fourth Proportional to 488,009.40, 732,014.10 and 320,587.80

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Solution

The fourth proportional to 488,009.40, 732,014.10 and 320,587.80 is: 480,881.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,009.40 : 732,014.10 = 320,587.80 : x
  2. Step 2: Convert to fraction form
    488,009.40/732,014.10 = 320,587.80/x
  3. Step 3: Cross multiply
    488,009.40x = 732,014.10 × 320,587.80
  4. Step 4: Simplify right side
    488,009.40x = 234,674,789,887.98
  5. Step 5: Solve for x
    x = 234,674,789,887.98/488,009.40
  6. Step 6: Final answer
    x = 480,881.70

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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.