Home / 778,286,868,848.10-1,167,606,340,478.70-420,131,155,446.54

Finding the Fourth Proportional to 778,286,868,848.10, 1,167,606,340,478.70 and 420,131,155,446.54

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Solution

The fourth proportional to 778,286,868,848.10, 1,167,606,340,478.70 and 420,131,155,446.54 is: 630,291,760,746.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,286,868,848.10 : 1,167,606,340,478.70 = 420,131,155,446.54 : x
  2. Step 2: Convert to fraction form
    778,286,868,848.10/1,167,606,340,478.70 = 420,131,155,446.54/x
  3. Step 3: Cross multiply
    778,286,868,848.10x = 1,167,606,340,478.70 × 420,131,155,446.54
  4. Step 4: Simplify right side
    778,286,868,848.10x = 490,547,800,932,022,378,037,248
  5. Step 5: Solve for x
    x = 490,547,800,932,022,378,037,248/778,286,868,848.10
  6. Step 6: Final answer
    x = 630,291,760,746.34

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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.