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Finding the Fourth Proportional to 3,000,678, 4,501,017 and 899,430

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Solution

The fourth proportional to 3,000,678, 4,501,017 and 899,430 is: 1,349,145

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,000,678 : 4,501,017 = 899,430 : x
  2. Step 2: Convert to fraction form
    3,000,678/4,501,017 = 899,430/x
  3. Step 3: Cross multiply
    3,000,678x = 4,501,017 × 899,430
  4. Step 4: Simplify right side
    3,000,678x = 4,048,349,720,310
  5. Step 5: Solve for x
    x = 4,048,349,720,310/3,000,678
  6. Step 6: Final answer
    x = 1,349,145

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Similar ratio
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1.5x scale

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.