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Finding the Fourth Proportional to 553,656.70, 828,735.45 and 434,683.90

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Solution

The fourth proportional to 553,656.70, 828,735.45 and 434,683.90 is: 650,652.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,656.70 : 828,735.45 = 434,683.90 : x
  2. Step 2: Convert to fraction form
    553,656.70/828,735.45 = 434,683.90/x
  3. Step 3: Cross multiply
    553,656.70x = 828,735.45 × 434,683.90
  4. Step 4: Simplify right side
    553,656.70x = 360,237,957,474.26
  5. Step 5: Solve for x
    x = 360,237,957,474.26/553,656.70
  6. Step 6: Final answer
    x = 650,652.21

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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.