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Finding the Fourth Proportional to 1,386,932.06, 1,913,973.32 and 775,095.04

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Solution

The fourth proportional to 1,386,932.06, 1,913,973.32 and 775,095.04 is: 1,069,635.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,932.06 : 1,913,973.32 = 775,095.04 : x
  2. Step 2: Convert to fraction form
    1,386,932.06/1,913,973.32 = 775,095.04/x
  3. Step 3: Cross multiply
    1,386,932.06x = 1,913,973.32 × 775,095.04
  4. Step 4: Simplify right side
    1,386,932.06x = 1,483,511,227,024.33
  5. Step 5: Solve for x
    x = 1,483,511,227,024.33/1,386,932.06
  6. Step 6: Final answer
    x = 1,069,635.11

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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.