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Finding the Fourth Proportional to 553,379.60, 830,069.40 and 272,860.40

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Solution

The fourth proportional to 553,379.60, 830,069.40 and 272,860.40 is: 409,290.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,379.60 : 830,069.40 = 272,860.40 : x
  2. Step 2: Convert to fraction form
    553,379.60/830,069.40 = 272,860.40/x
  3. Step 3: Cross multiply
    553,379.60x = 830,069.40 × 272,860.40
  4. Step 4: Simplify right side
    553,379.60x = 226,493,068,511.76
  5. Step 5: Solve for x
    x = 226,493,068,511.76/553,379.60
  6. Step 6: Final answer
    x = 409,290.60

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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.