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Finding the Fourth Proportional to 647,534.40, 970,840.80 and 248,020.80

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Solution

The fourth proportional to 647,534.40, 970,840.80 and 248,020.80 is: 371,854.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,534.40 : 970,840.80 = 248,020.80 : x
  2. Step 2: Convert to fraction form
    647,534.40/970,840.80 = 248,020.80/x
  3. Step 3: Cross multiply
    647,534.40x = 970,840.80 × 248,020.80
  4. Step 4: Simplify right side
    647,534.40x = 240,788,711,888.64
  5. Step 5: Solve for x
    x = 240,788,711,888.64/647,534.40
  6. Step 6: Final answer
    x = 371,854.70

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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.