Home / 765,145,808.40-1,146,018,101.40-663,109,136.40

Finding the Fourth Proportional to 765,145,808.40, 1,146,018,101.40 and 663,109,136.40

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Solution

The fourth proportional to 765,145,808.40, 1,146,018,101.40 and 663,109,136.40 is: 993,189,879.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,145,808.40 : 1,146,018,101.40 = 663,109,136.40 : x
  2. Step 2: Convert to fraction form
    765,145,808.40/1,146,018,101.40 = 663,109,136.40/x
  3. Step 3: Cross multiply
    765,145,808.40x = 1,146,018,101.40 × 663,109,136.40
  4. Step 4: Simplify right side
    765,145,808.40x = 759,935,073,518,121,728
  5. Step 5: Solve for x
    x = 759,935,073,518,121,728/765,145,808.40
  6. Step 6: Final answer
    x = 993,189,879.86

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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.