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Finding the Fourth Proportional to 404,894,607.80, 607,341,911.70 and 386,082,908.60

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Solution

The fourth proportional to 404,894,607.80, 607,341,911.70 and 386,082,908.60 is: 579,124,362.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,894,607.80 : 607,341,911.70 = 386,082,908.60 : x
  2. Step 2: Convert to fraction form
    404,894,607.80/607,341,911.70 = 386,082,908.60/x
  3. Step 3: Cross multiply
    404,894,607.80x = 607,341,911.70 × 386,082,908.60
  4. Step 4: Simplify right side
    404,894,607.80x = 234,484,331,783,820,416
  5. Step 5: Solve for x
    x = 234,484,331,783,820,416/404,894,607.80
  6. Step 6: Final answer
    x = 579,124,362.90

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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.