Home / 423,421,285.92-635,061,483.12-128,246,226.66

Finding the Fourth Proportional to 423,421,285.92, 635,061,483.12 and 128,246,226.66

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Solution

The fourth proportional to 423,421,285.92, 635,061,483.12 and 128,246,226.66 is: 192,348,003.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,421,285.92 : 635,061,483.12 = 128,246,226.66 : x
  2. Step 2: Convert to fraction form
    423,421,285.92/635,061,483.12 = 128,246,226.66/x
  3. Step 3: Cross multiply
    423,421,285.92x = 635,061,483.12 × 128,246,226.66
  4. Step 4: Simplify right side
    423,421,285.92x = 81,444,238,907,243,280
  5. Step 5: Solve for x
    x = 81,444,238,907,243,280/423,421,285.92
  6. Step 6: Final answer
    x = 192,348,003.31

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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.