Home / 5,280,588,014.40-7,920,882,021.60-4,428,262,938.60

Finding the Fourth Proportional to 5,280,588,014.40, 7,920,882,021.60 and 4,428,262,938.60

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Solution

The fourth proportional to 5,280,588,014.40, 7,920,882,021.60 and 4,428,262,938.60 is: 6,642,394,407.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280,588,014.40 : 7,920,882,021.60 = 4,428,262,938.60 : x
  2. Step 2: Convert to fraction form
    5,280,588,014.40/7,920,882,021.60 = 4,428,262,938.60/x
  3. Step 3: Cross multiply
    5,280,588,014.40x = 7,920,882,021.60 × 4,428,262,938.60
  4. Step 4: Simplify right side
    5,280,588,014.40x = 35,075,748,297,274,331,136
  5. Step 5: Solve for x
    x = 35,075,748,297,274,331,136/5,280,588,014.40
  6. Step 6: Final answer
    x = 6,642,394,407.90

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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.