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Finding the Fourth Proportional to 702,973.21, 970,103.55 and 380,683.66

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Solution

The fourth proportional to 702,973.21, 970,103.55 and 380,683.66 is: 525,343.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,973.21 : 970,103.55 = 380,683.66 : x
  2. Step 2: Convert to fraction form
    702,973.21/970,103.55 = 380,683.66/x
  3. Step 3: Cross multiply
    702,973.21x = 970,103.55 × 380,683.66
  4. Step 4: Simplify right side
    702,973.21x = 369,302,569,992.99
  5. Step 5: Solve for x
    x = 369,302,569,992.99/702,973.21
  6. Step 6: Final answer
    x = 525,343.73

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Double scale
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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.