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Finding the Fourth Proportional to 614,449.80, 920,810.70 and 488,305.80

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Solution

The fourth proportional to 614,449.80, 920,810.70 and 488,305.80 is: 731,772.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,449.80 : 920,810.70 = 488,305.80 : x
  2. Step 2: Convert to fraction form
    614,449.80/920,810.70 = 488,305.80/x
  3. Step 3: Cross multiply
    614,449.80x = 920,810.70 × 488,305.80
  4. Step 4: Simplify right side
    614,449.80x = 449,637,205,512.06
  5. Step 5: Solve for x
    x = 449,637,205,512.06/614,449.80
  6. Step 6: Final answer
    x = 731,772.08

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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.