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Finding the Fourth Proportional to 648,012.80, 971,596.80 and 581,657.60

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Solution

The fourth proportional to 648,012.80, 971,596.80 and 581,657.60 is: 872,107.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,012.80 : 971,596.80 = 581,657.60 : x
  2. Step 2: Convert to fraction form
    648,012.80/971,596.80 = 581,657.60/x
  3. Step 3: Cross multiply
    648,012.80x = 971,596.80 × 581,657.60
  4. Step 4: Simplify right side
    648,012.80x = 565,136,662,855.68
  5. Step 5: Solve for x
    x = 565,136,662,855.68/648,012.80
  6. Step 6: Final answer
    x = 872,107.25

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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.