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Finding the Fourth Proportional to 760,318.12, 1,048,825.12 and 488,428.80

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Solution

The fourth proportional to 760,318.12, 1,048,825.12 and 488,428.80 is: 673,765.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,318.12 : 1,048,825.12 = 488,428.80 : x
  2. Step 2: Convert to fraction form
    760,318.12/1,048,825.12 = 488,428.80/x
  3. Step 3: Cross multiply
    760,318.12x = 1,048,825.12 × 488,428.80
  4. Step 4: Simplify right side
    760,318.12x = 512,276,394,771.46
  5. Step 5: Solve for x
    x = 512,276,394,771.46/760,318.12
  6. Step 6: Final answer
    x = 673,765.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.