Home / 772,308,123.60-1,158,462,185.40-687,655,477.20

Finding the Fourth Proportional to 772,308,123.60, 1,158,462,185.40 and 687,655,477.20

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Solution

The fourth proportional to 772,308,123.60, 1,158,462,185.40 and 687,655,477.20 is: 1,031,483,215.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,308,123.60 : 1,158,462,185.40 = 687,655,477.20 : x
  2. Step 2: Convert to fraction form
    772,308,123.60/1,158,462,185.40 = 687,655,477.20/x
  3. Step 3: Cross multiply
    772,308,123.60x = 1,158,462,185.40 × 687,655,477.20
  4. Step 4: Simplify right side
    772,308,123.60x = 796,622,866,919,392,000
  5. Step 5: Solve for x
    x = 796,622,866,919,392,000/772,308,123.60
  6. Step 6: Final answer
    x = 1,031,483,215.80

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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.