Home / 420,276,455.40-630,414,683.10-396,467,898.60

Finding the Fourth Proportional to 420,276,455.40, 630,414,683.10 and 396,467,898.60

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Solution

The fourth proportional to 420,276,455.40, 630,414,683.10 and 396,467,898.60 is: 594,701,847.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,276,455.40 : 630,414,683.10 = 396,467,898.60 : x
  2. Step 2: Convert to fraction form
    420,276,455.40/630,414,683.10 = 396,467,898.60/x
  3. Step 3: Cross multiply
    420,276,455.40x = 630,414,683.10 × 396,467,898.60
  4. Step 4: Simplify right side
    420,276,455.40x = 249,939,184,655,241,952
  5. Step 5: Solve for x
    x = 249,939,184,655,241,952/420,276,455.40
  6. Step 6: Final answer
    x = 594,701,847.90

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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.