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Finding the Fourth Proportional to 702,905.55, 970,008.30 and 380,616.60

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Solution

The fourth proportional to 702,905.55, 970,008.30 and 380,616.60 is: 525,250.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,905.55 : 970,008.30 = 380,616.60 : x
  2. Step 2: Convert to fraction form
    702,905.55/970,008.30 = 380,616.60/x
  3. Step 3: Cross multiply
    702,905.55x = 970,008.30 × 380,616.60
  4. Step 4: Simplify right side
    702,905.55x = 369,201,261,117.78
  5. Step 5: Solve for x
    x = 369,201,261,117.78/702,905.55
  6. Step 6: Final answer
    x = 525,250.17

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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.