Home / 1,388,483.93-1,916,285.30-776,670.68

Finding the Fourth Proportional to 1,388,483.93, 1,916,285.30 and 776,670.68

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Solution

The fourth proportional to 1,388,483.93, 1,916,285.30 and 776,670.68 is: 1,071,904.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,483.93 : 1,916,285.30 = 776,670.68 : x
  2. Step 2: Convert to fraction form
    1,388,483.93/1,916,285.30 = 776,670.68/x
  3. Step 3: Cross multiply
    1,388,483.93x = 1,916,285.30 × 776,670.68
  4. Step 4: Simplify right side
    1,388,483.93x = 1,488,322,607,025.00
  5. Step 5: Solve for x
    x = 1,488,322,607,025.00/1,388,483.93
  6. Step 6: Final answer
    x = 1,071,904.81

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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.