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Finding the Fourth Proportional to 423,000.90, 634,501.35 and 297,029.70

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Solution

The fourth proportional to 423,000.90, 634,501.35 and 297,029.70 is: 445,544.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,000.90 : 634,501.35 = 297,029.70 : x
  2. Step 2: Convert to fraction form
    423,000.90/634,501.35 = 297,029.70/x
  3. Step 3: Cross multiply
    423,000.90x = 634,501.35 × 297,029.70
  4. Step 4: Simplify right side
    423,000.90x = 188,465,745,640.10
  5. Step 5: Solve for x
    x = 188,465,745,640.10/423,000.90
  6. Step 6: Final answer
    x = 445,544.55

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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.