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Finding the Fourth Proportional to 713,112.99, 984,103.47 and 390,816.02

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Solution

The fourth proportional to 713,112.99, 984,103.47 and 390,816.02 is: 539,330.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,112.99 : 984,103.47 = 390,816.02 : x
  2. Step 2: Convert to fraction form
    713,112.99/984,103.47 = 390,816.02/x
  3. Step 3: Cross multiply
    713,112.99x = 984,103.47 × 390,816.02
  4. Step 4: Simplify right side
    713,112.99x = 384,603,401,413.59
  5. Step 5: Solve for x
    x = 384,603,401,413.59/713,112.99
  6. Step 6: Final answer
    x = 539,330.24

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1.5x scale

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.