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Finding the Fourth Proportional to 702,927.78, 970,038.58 and 380,637.85

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Solution

The fourth proportional to 702,927.78, 970,038.58 and 380,637.85 is: 525,279.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,927.78 : 970,038.58 = 380,637.85 : x
  2. Step 2: Convert to fraction form
    702,927.78/970,038.58 = 380,637.85/x
  3. Step 3: Cross multiply
    702,927.78x = 970,038.58 × 380,637.85
  4. Step 4: Simplify right side
    702,927.78x = 369,233,399,508.25
  5. Step 5: Solve for x
    x = 369,233,399,508.25/702,927.78
  6. Step 6: Final answer
    x = 525,279.28

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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.