Home / 1,315,270.61-1,813,431.80-1,005,557.01

Finding the Fourth Proportional to 1,315,270.61, 1,813,431.80 and 1,005,557.01

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Solution

The fourth proportional to 1,315,270.61, 1,813,431.80 and 1,005,557.01 is: 1,386,413.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,270.61 : 1,813,431.80 = 1,005,557.01 : x
  2. Step 2: Convert to fraction form
    1,315,270.61/1,813,431.80 = 1,005,557.01/x
  3. Step 3: Cross multiply
    1,315,270.61x = 1,813,431.80 × 1,005,557.01
  4. Step 4: Simplify right side
    1,315,270.61x = 1,823,509,060,820.40
  5. Step 5: Solve for x
    x = 1,823,509,060,820.40/1,315,270.61
  6. Step 6: Final answer
    x = 1,386,413.60

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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.