Home / 1,913,413.76-2,637,676.32-1,224,987.20

Finding the Fourth Proportional to 1,913,413.76, 2,637,676.32 and 1,224,987.20

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Solution

The fourth proportional to 1,913,413.76, 2,637,676.32 and 1,224,987.20 is: 1,688,667.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913,413.76 : 2,637,676.32 = 1,224,987.20 : x
  2. Step 2: Convert to fraction form
    1,913,413.76/2,637,676.32 = 1,224,987.20/x
  3. Step 3: Cross multiply
    1,913,413.76x = 2,637,676.32 × 1,224,987.20
  4. Step 4: Simplify right side
    1,913,413.76x = 3,231,119,729,743.10
  5. Step 5: Solve for x
    x = 3,231,119,729,743.10/1,913,413.76
  6. Step 6: Final answer
    x = 1,688,667.55

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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.