Home / 1,235,413,765.78-1,853,119,161.44-315,290,202.82

Finding the Fourth Proportional to 1,235,413,765.78, 1,853,119,161.44 and 315,290,202.82

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Solution

The fourth proportional to 1,235,413,765.78, 1,853,119,161.44 and 315,290,202.82 is: 472,934,924.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,235,413,765.78 : 1,853,119,161.44 = 315,290,202.82 : x
  2. Step 2: Convert to fraction form
    1,235,413,765.78/1,853,119,161.44 = 315,290,202.82/x
  3. Step 3: Cross multiply
    1,235,413,765.78x = 1,853,119,161.44 × 315,290,202.82
  4. Step 4: Simplify right side
    1,235,413,765.78x = 584,270,316,260,045,952
  5. Step 5: Solve for x
    x = 584,270,316,260,045,952/1,235,413,765.78
  6. Step 6: Final answer
    x = 472,934,924.67

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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.