Home / 926,777,743.40-1,390,166,615.10-489,909,621.80

Finding the Fourth Proportional to 926,777,743.40, 1,390,166,615.10 and 489,909,621.80

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Solution

The fourth proportional to 926,777,743.40, 1,390,166,615.10 and 489,909,621.80 is: 734,864,432.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,777,743.40 : 1,390,166,615.10 = 489,909,621.80 : x
  2. Step 2: Convert to fraction form
    926,777,743.40/1,390,166,615.10 = 489,909,621.80/x
  3. Step 3: Cross multiply
    926,777,743.40x = 1,390,166,615.10 × 489,909,621.80
  4. Step 4: Simplify right side
    926,777,743.40x = 681,056,000,642,627,200
  5. Step 5: Solve for x
    x = 681,056,000,642,627,200/926,777,743.40
  6. Step 6: Final answer
    x = 734,864,432.70

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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.