Home / 1,581,173,749.55-2,180,747,466.72-1,390,026,064.91

Finding the Fourth Proportional to 1,581,173,749.55, 2,180,747,466.72 and 1,390,026,064.91

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Solution

The fourth proportional to 1,581,173,749.55, 2,180,747,466.72 and 1,390,026,064.91 is: 1,917,117,470.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,581,173,749.55 : 2,180,747,466.72 = 1,390,026,064.91 : x
  2. Step 2: Convert to fraction form
    1,581,173,749.55/2,180,747,466.72 = 1,390,026,064.91/x
  3. Step 3: Cross multiply
    1,581,173,749.55x = 2,180,747,466.72 × 1,390,026,064.91
  4. Step 4: Simplify right side
    1,581,173,749.55x = 3,031,295,819,716,348,928
  5. Step 5: Solve for x
    x = 3,031,295,819,716,348,928/1,581,173,749.55
  6. Step 6: Final answer
    x = 1,917,117,470.85

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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.