Home / 3,938,386,319.30-5,434,909,169.60-2,154,224,165.64

Finding the Fourth Proportional to 3,938,386,319.30, 5,434,909,169.60 and 2,154,224,165.64

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Solution

The fourth proportional to 3,938,386,319.30, 5,434,909,169.60 and 2,154,224,165.64 is: 2,972,794,368.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938,386,319.30 : 5,434,909,169.60 = 2,154,224,165.64 : x
  2. Step 2: Convert to fraction form
    3,938,386,319.30/5,434,909,169.60 = 2,154,224,165.64/x
  3. Step 3: Cross multiply
    3,938,386,319.30x = 5,434,909,169.60 × 2,154,224,165.64
  4. Step 4: Simplify right side
    3,938,386,319.30x = 11,708,012,671,210,745,856
  5. Step 5: Solve for x
    x = 11,708,012,671,210,745,856/3,938,386,319.30
  6. Step 6: Final answer
    x = 2,972,794,368.56

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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.