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Finding the Fourth Proportional to 429,333,903.70, 644,000,855.55 and 429,333,903.70

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Solution

The fourth proportional to 429,333,903.70, 644,000,855.55 and 429,333,903.70 is: 644,000,855.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,333,903.70 : 644,000,855.55 = 429,333,903.70 : x
  2. Step 2: Convert to fraction form
    429,333,903.70/644,000,855.55 = 429,333,903.70/x
  3. Step 3: Cross multiply
    429,333,903.70x = 644,000,855.55 × 429,333,903.70
  4. Step 4: Simplify right side
    429,333,903.70x = 276,491,401,299,421,280
  5. Step 5: Solve for x
    x = 276,491,401,299,421,280/429,333,903.70
  6. Step 6: Final answer
    x = 644,000,855.55

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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.