Home / 478,495,855.51-660,447,140.42-311,647,886.85

Finding the Fourth Proportional to 478,495,855.51, 660,447,140.42 and 311,647,886.85

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Solution

The fourth proportional to 478,495,855.51, 660,447,140.42 and 311,647,886.85 is: 430,154,103.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,495,855.51 : 660,447,140.42 = 311,647,886.85 : x
  2. Step 2: Convert to fraction form
    478,495,855.51/660,447,140.42 = 311,647,886.85/x
  3. Step 3: Cross multiply
    478,495,855.51x = 660,447,140.42 × 311,647,886.85
  4. Step 4: Simplify right side
    478,495,855.51x = 205,826,955,688,018,208
  5. Step 5: Solve for x
    x = 205,826,955,688,018,208/478,495,855.51
  6. Step 6: Final answer
    x = 430,154,103.36

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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.