Home / 830,452,091.40-1,245,678,137.10-442,075,008.60

Finding the Fourth Proportional to 830,452,091.40, 1,245,678,137.10 and 442,075,008.60

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Solution

The fourth proportional to 830,452,091.40, 1,245,678,137.10 and 442,075,008.60 is: 663,112,512.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,452,091.40 : 1,245,678,137.10 = 442,075,008.60 : x
  2. Step 2: Convert to fraction form
    830,452,091.40/1,245,678,137.10 = 442,075,008.60/x
  3. Step 3: Cross multiply
    830,452,091.40x = 1,245,678,137.10 × 442,075,008.60
  4. Step 4: Simplify right side
    830,452,091.40x = 550,683,173,171,314,496
  5. Step 5: Solve for x
    x = 550,683,173,171,314,496/830,452,091.40
  6. Step 6: Final answer
    x = 663,112,512.90

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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.