Home / 1,078,272,837.60-1,617,409,256.40-664,415,455.20

Finding the Fourth Proportional to 1,078,272,837.60, 1,617,409,256.40 and 664,415,455.20

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Solution

The fourth proportional to 1,078,272,837.60, 1,617,409,256.40 and 664,415,455.20 is: 996,623,182.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,272,837.60 : 1,617,409,256.40 = 664,415,455.20 : x
  2. Step 2: Convert to fraction form
    1,078,272,837.60/1,617,409,256.40 = 664,415,455.20/x
  3. Step 3: Cross multiply
    1,078,272,837.60x = 1,617,409,256.40 × 664,415,455.20
  4. Step 4: Simplify right side
    1,078,272,837.60x = 1,074,631,707,335,699,712
  5. Step 5: Solve for x
    x = 1,074,631,707,335,699,712/1,078,272,837.60
  6. Step 6: Final answer
    x = 996,623,182.80

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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.