Home / 1,078,413.74-1,488,028.04-642,823.28

Finding the Fourth Proportional to 1,078,413.74, 1,488,028.04 and 642,823.28

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Solution

The fourth proportional to 1,078,413.74, 1,488,028.04 and 642,823.28 is: 886,987.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,413.74 : 1,488,028.04 = 642,823.28 : x
  2. Step 2: Convert to fraction form
    1,078,413.74/1,488,028.04 = 642,823.28/x
  3. Step 3: Cross multiply
    1,078,413.74x = 1,488,028.04 × 642,823.28
  4. Step 4: Simplify right side
    1,078,413.74x = 956,539,054,750.52
  5. Step 5: Solve for x
    x = 956,539,054,750.52/1,078,413.74
  6. Step 6: Final answer
    x = 886,987.08

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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.