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Finding the Fourth Proportional to 690,413.82, 952,763.40 and 384,483.53

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Solution

The fourth proportional to 690,413.82, 952,763.40 and 384,483.53 is: 530,582.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,413.82 : 952,763.40 = 384,483.53 : x
  2. Step 2: Convert to fraction form
    690,413.82/952,763.40 = 384,483.53/x
  3. Step 3: Cross multiply
    690,413.82x = 952,763.40 × 384,483.53
  4. Step 4: Simplify right side
    690,413.82x = 366,321,830,522.99
  5. Step 5: Solve for x
    x = 366,321,830,522.99/690,413.82
  6. Step 6: Final answer
    x = 530,582.99

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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.