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Finding the Fourth Proportional to 702,983.79, 970,115.70 and 380,693.80

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Solution

The fourth proportional to 702,983.79, 970,115.70 and 380,693.80 is: 525,356.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,983.79 : 970,115.70 = 380,693.80 : x
  2. Step 2: Convert to fraction form
    702,983.79/970,115.70 = 380,693.80/x
  3. Step 3: Cross multiply
    702,983.79x = 970,115.70 × 380,693.80
  4. Step 4: Simplify right side
    702,983.79x = 369,317,032,272.66
  5. Step 5: Solve for x
    x = 369,317,032,272.66/702,983.79
  6. Step 6: Final answer
    x = 525,356.40

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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.