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Finding the Fourth Proportional to 604,328,673.20, 906,493,009.80 and 420,662,663.60

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Solution

The fourth proportional to 604,328,673.20, 906,493,009.80 and 420,662,663.60 is: 630,993,995.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,328,673.20 : 906,493,009.80 = 420,662,663.60 : x
  2. Step 2: Convert to fraction form
    604,328,673.20/906,493,009.80 = 420,662,663.60/x
  3. Step 3: Cross multiply
    604,328,673.20x = 906,493,009.80 × 420,662,663.60
  4. Step 4: Simplify right side
    604,328,673.20x = 381,327,764,037,248,896
  5. Step 5: Solve for x
    x = 381,327,764,037,248,896/604,328,673.20
  6. Step 6: Final answer
    x = 630,993,995.40

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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.