Home / 1,121,097,063.78-1,681,639,478.55-457,108,478.24

Finding the Fourth Proportional to 1,121,097,063.78, 1,681,639,478.55 and 457,108,478.24

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Solution

The fourth proportional to 1,121,097,063.78, 1,681,639,478.55 and 457,108,478.24 is: 685,660,223.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,097,063.78 : 1,681,639,478.55 = 457,108,478.24 : x
  2. Step 2: Convert to fraction form
    1,121,097,063.78/1,681,639,478.55 = 457,108,478.24/x
  3. Step 3: Cross multiply
    1,121,097,063.78x = 1,681,639,478.55 × 457,108,478.24
  4. Step 4: Simplify right side
    1,121,097,063.78x = 768,691,662,979,889,408
  5. Step 5: Solve for x
    x = 768,691,662,979,889,408/1,121,097,063.78
  6. Step 6: Final answer
    x = 685,660,223.20

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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.