Home / 512,817,315.42-707,690,358.87-277,867,913.61

Finding the Fourth Proportional to 512,817,315.42, 707,690,358.87 and 277,867,913.61

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Solution

The fourth proportional to 512,817,315.42, 707,690,358.87 and 277,867,913.61 is: 383,459,055.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,817,315.42 : 707,690,358.87 = 277,867,913.61 : x
  2. Step 2: Convert to fraction form
    512,817,315.42/707,690,358.87 = 277,867,913.61/x
  3. Step 3: Cross multiply
    512,817,315.42x = 707,690,358.87 × 277,867,913.61
  4. Step 4: Simplify right side
    512,817,315.42x = 196,644,443,501,119,072
  5. Step 5: Solve for x
    x = 196,644,443,501,119,072/512,817,315.42
  6. Step 6: Final answer
    x = 383,459,055.67

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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.