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Finding the Fourth Proportional to 648,625.80, 972,938.70 and 648,625.80

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Solution

The fourth proportional to 648,625.80, 972,938.70 and 648,625.80 is: 972,938.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,625.80 : 972,938.70 = 648,625.80 : x
  2. Step 2: Convert to fraction form
    648,625.80/972,938.70 = 648,625.80/x
  3. Step 3: Cross multiply
    648,625.80x = 972,938.70 × 648,625.80
  4. Step 4: Simplify right side
    648,625.80x = 631,073,142,638.46
  5. Step 5: Solve for x
    x = 631,073,142,638.46/648,625.80
  6. Step 6: Final answer
    x = 972,938.70

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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.