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Finding the Fourth Proportional to 553,519.40, 830,279.10 and 455,104.40

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Solution

The fourth proportional to 553,519.40, 830,279.10 and 455,104.40 is: 682,656.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,519.40 : 830,279.10 = 455,104.40 : x
  2. Step 2: Convert to fraction form
    553,519.40/830,279.10 = 455,104.40/x
  3. Step 3: Cross multiply
    553,519.40x = 830,279.10 × 455,104.40
  4. Step 4: Simplify right side
    553,519.40x = 377,863,671,638.04
  5. Step 5: Solve for x
    x = 377,863,671,638.04/553,519.40
  6. Step 6: Final answer
    x = 682,656.60

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Similar ratio
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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.