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Finding the Fourth Proportional to 553,692.20, 828,788.70 and 434,719.40

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Solution

The fourth proportional to 553,692.20, 828,788.70 and 434,719.40 is: 650,705.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,692.20 : 828,788.70 = 434,719.40 : x
  2. Step 2: Convert to fraction form
    553,692.20/828,788.70 = 434,719.40/x
  3. Step 3: Cross multiply
    553,692.20x = 828,788.70 × 434,719.40
  4. Step 4: Simplify right side
    553,692.20x = 360,290,526,390.78
  5. Step 5: Solve for x
    x = 360,290,526,390.78/553,692.20
  6. Step 6: Final answer
    x = 650,705.44

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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.