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Finding the Fourth Proportional to 404,908,666.80, 607,363,000.20 and 389,036,295.60

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Solution

The fourth proportional to 404,908,666.80, 607,363,000.20 and 389,036,295.60 is: 583,554,443.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,908,666.80 : 607,363,000.20 = 389,036,295.60 : x
  2. Step 2: Convert to fraction form
    404,908,666.80/607,363,000.20 = 389,036,295.60/x
  3. Step 3: Cross multiply
    404,908,666.80x = 607,363,000.20 × 389,036,295.60
  4. Step 4: Simplify right side
    404,908,666.80x = 236,286,251,682,310,080
  5. Step 5: Solve for x
    x = 236,286,251,682,310,080/404,908,666.80
  6. Step 6: Final answer
    x = 583,554,443.40

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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.