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Finding the Fourth Proportional to 312,955,898.40, 439,045,250.40 and 312,955,898.40

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Solution

The fourth proportional to 312,955,898.40, 439,045,250.40 and 312,955,898.40 is: 439,045,250.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,955,898.40 : 439,045,250.40 = 312,955,898.40 : x
  2. Step 2: Convert to fraction form
    312,955,898.40/439,045,250.40 = 312,955,898.40/x
  3. Step 3: Cross multiply
    312,955,898.40x = 439,045,250.40 × 312,955,898.40
  4. Step 4: Simplify right side
    312,955,898.40x = 137,401,800,777,184,944
  5. Step 5: Solve for x
    x = 137,401,800,777,184,944/312,955,898.40
  6. Step 6: Final answer
    x = 439,045,250.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.