Home / 448,017,431.40-672,026,147.10-420,807,652.20

Finding the Fourth Proportional to 448,017,431.40, 672,026,147.10 and 420,807,652.20

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Solution

The fourth proportional to 448,017,431.40, 672,026,147.10 and 420,807,652.20 is: 631,211,478.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,017,431.40 : 672,026,147.10 = 420,807,652.20 : x
  2. Step 2: Convert to fraction form
    448,017,431.40/672,026,147.10 = 420,807,652.20/x
  3. Step 3: Cross multiply
    448,017,431.40x = 672,026,147.10 × 420,807,652.20
  4. Step 4: Simplify right side
    448,017,431.40x = 282,793,745,178,162,848
  5. Step 5: Solve for x
    x = 282,793,745,178,162,848/448,017,431.40
  6. Step 6: Final answer
    x = 631,211,478.30

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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.