Home / 478,495,855.01-660,447,139.73-311,647,886.35

Finding the Fourth Proportional to 478,495,855.01, 660,447,139.73 and 311,647,886.35

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Solution

The fourth proportional to 478,495,855.01, 660,447,139.73 and 311,647,886.35 is: 430,154,102.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,495,855.01 : 660,447,139.73 = 311,647,886.35 : x
  2. Step 2: Convert to fraction form
    478,495,855.01/660,447,139.73 = 311,647,886.35/x
  3. Step 3: Cross multiply
    478,495,855.01x = 660,447,139.73 × 311,647,886.35
  4. Step 4: Simplify right side
    478,495,855.01x = 205,826,955,137,897,152
  5. Step 5: Solve for x
    x = 205,826,955,137,897,152/478,495,855.01
  6. Step 6: Final answer
    x = 430,154,102.66

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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.