Home / 915,105,913.38-1,262,984,202.49-558,080,818.76

Finding the Fourth Proportional to 915,105,913.38, 1,262,984,202.49 and 558,080,818.76

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Solution

The fourth proportional to 915,105,913.38, 1,262,984,202.49 and 558,080,818.76 is: 770,235,715.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,105,913.38 : 1,262,984,202.49 = 558,080,818.76 : x
  2. Step 2: Convert to fraction form
    915,105,913.38/1,262,984,202.49 = 558,080,818.76/x
  3. Step 3: Cross multiply
    915,105,913.38x = 1,262,984,202.49 × 558,080,818.76
  4. Step 4: Simplify right side
    915,105,913.38x = 704,847,257,806,564,864
  5. Step 5: Solve for x
    x = 704,847,257,806,564,864/915,105,913.38
  6. Step 6: Final answer
    x = 770,235,715.34

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Double scale
Find fourth proportional to 915,105,914.38, 1,262,984,203.87 and 558,080,819.76
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1.5x scale

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.