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Finding the Fourth Proportional to 489,609.20, 734,413.80 and 470,946.80

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Solution

The fourth proportional to 489,609.20, 734,413.80 and 470,946.80 is: 706,420.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,609.20 : 734,413.80 = 470,946.80 : x
  2. Step 2: Convert to fraction form
    489,609.20/734,413.80 = 470,946.80/x
  3. Step 3: Cross multiply
    489,609.20x = 734,413.80 × 470,946.80
  4. Step 4: Simplify right side
    489,609.20x = 345,869,828,985.84
  5. Step 5: Solve for x
    x = 345,869,828,985.84/489,609.20
  6. Step 6: Final answer
    x = 706,420.20

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Similar ratio
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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.