Home / 690,849.12-1,036,413.36-291,490.72

Finding the Fourth Proportional to 690,849.12, 1,036,413.36 and 291,490.72

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Solution

The fourth proportional to 690,849.12, 1,036,413.36 and 291,490.72 is: 437,295.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,849.12 : 1,036,413.36 = 291,490.72 : x
  2. Step 2: Convert to fraction form
    690,849.12/1,036,413.36 = 291,490.72/x
  3. Step 3: Cross multiply
    690,849.12x = 1,036,413.36 × 291,490.72
  4. Step 4: Simplify right side
    690,849.12x = 302,104,876,524.02
  5. Step 5: Solve for x
    x = 302,104,876,524.02/690,849.12
  6. Step 6: Final answer
    x = 437,295.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.