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Finding the Fourth Proportional to 702,938.76, 970,053.78 and 380,648.88

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Solution

The fourth proportional to 702,938.76, 970,053.78 and 380,648.88 is: 525,294.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,938.76 : 970,053.78 = 380,648.88 : x
  2. Step 2: Convert to fraction form
    702,938.76/970,053.78 = 380,648.88/x
  3. Step 3: Cross multiply
    702,938.76x = 970,053.78 × 380,648.88
  4. Step 4: Simplify right side
    702,938.76x = 369,249,884,896.77
  5. Step 5: Solve for x
    x = 369,249,884,896.77/702,938.76
  6. Step 6: Final answer
    x = 525,294.53

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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.