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Finding the Fourth Proportional to 647,430.70, 970,854.45 and 247,938.70

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Solution

The fourth proportional to 647,430.70, 970,854.45 and 247,938.70 is: 371,796.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,430.70 : 970,854.45 = 247,938.70 : x
  2. Step 2: Convert to fraction form
    647,430.70/970,854.45 = 247,938.70/x
  3. Step 3: Cross multiply
    647,430.70x = 970,854.45 × 247,938.70
  4. Step 4: Simplify right side
    647,430.70x = 240,712,390,222.22
  5. Step 5: Solve for x
    x = 240,712,390,222.22/647,430.70
  6. Step 6: Final answer
    x = 371,796.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.