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Finding the Fourth Proportional to 798,506.40, 1,198,220.40 and 299,920.80

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Solution

The fourth proportional to 798,506.40, 1,198,220.40 and 299,920.80 is: 450,054.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    798,506.40 : 1,198,220.40 = 299,920.80 : x
  2. Step 2: Convert to fraction form
    798,506.40/1,198,220.40 = 299,920.80/x
  3. Step 3: Cross multiply
    798,506.40x = 1,198,220.40 × 299,920.80
  4. Step 4: Simplify right side
    798,506.40x = 359,371,220,944.32
  5. Step 5: Solve for x
    x = 359,371,220,944.32/798,506.40
  6. Step 6: Final answer
    x = 450,054.28

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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.