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Finding the Fourth Proportional to 702,980.66, 970,108.49 and 380,683.38

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Solution

The fourth proportional to 702,980.66, 970,108.49 and 380,683.38 is: 525,340.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,980.66 : 970,108.49 = 380,683.38 : x
  2. Step 2: Convert to fraction form
    702,980.66/970,108.49 = 380,683.38/x
  3. Step 3: Cross multiply
    702,980.66x = 970,108.49 × 380,683.38
  4. Step 4: Simplify right side
    702,980.66x = 369,304,178,939.90
  5. Step 5: Solve for x
    x = 369,304,178,939.90/702,980.66
  6. Step 6: Final answer
    x = 525,340.45

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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.