Home / 926,778,860.40-1,390,168,290.60-489,910,738.80

Finding the Fourth Proportional to 926,778,860.40, 1,390,168,290.60 and 489,910,738.80

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Solution

The fourth proportional to 926,778,860.40, 1,390,168,290.60 and 489,910,738.80 is: 734,866,108.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,778,860.40 : 1,390,168,290.60 = 489,910,738.80 : x
  2. Step 2: Convert to fraction form
    926,778,860.40/1,390,168,290.60 = 489,910,738.80/x
  3. Step 3: Cross multiply
    926,778,860.40x = 1,390,168,290.60 × 489,910,738.80
  4. Step 4: Simplify right side
    926,778,860.40x = 681,058,374,304,179,072
  5. Step 5: Solve for x
    x = 681,058,374,304,179,072/926,778,860.40
  6. Step 6: Final answer
    x = 734,866,108.20

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Double scale
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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.