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Finding the Fourth Proportional to 706,105.50, 974,421.66 and 400,239.72

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Solution

The fourth proportional to 706,105.50, 974,421.66 and 400,239.72 is: 552,328.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,105.50 : 974,421.66 = 400,239.72 : x
  2. Step 2: Convert to fraction form
    706,105.50/974,421.66 = 400,239.72/x
  3. Step 3: Cross multiply
    706,105.50x = 974,421.66 × 400,239.72
  4. Step 4: Simplify right side
    706,105.50x = 390,002,252,360.34
  5. Step 5: Solve for x
    x = 390,002,252,360.34/706,105.50
  6. Step 6: Final answer
    x = 552,328.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.