Home / 478,495,853.39-660,447,137.48-311,647,884.72

Finding the Fourth Proportional to 478,495,853.39, 660,447,137.48 and 311,647,884.72

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Solution

The fourth proportional to 478,495,853.39, 660,447,137.48 and 311,647,884.72 is: 430,154,100.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,495,853.39 : 660,447,137.48 = 311,647,884.72 : x
  2. Step 2: Convert to fraction form
    478,495,853.39/660,447,137.48 = 311,647,884.72/x
  3. Step 3: Cross multiply
    478,495,853.39x = 660,447,137.48 × 311,647,884.72
  4. Step 4: Simplify right side
    478,495,853.39x = 205,826,953,363,462,816
  5. Step 5: Solve for x
    x = 205,826,953,363,462,816/478,495,853.39
  6. Step 6: Final answer
    x = 430,154,100.41

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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.