Home / 1,210,404,823.80-1,815,607,235.70-720,628,798.20

Finding the Fourth Proportional to 1,210,404,823.80, 1,815,607,235.70 and 720,628,798.20

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Solution

The fourth proportional to 1,210,404,823.80, 1,815,607,235.70 and 720,628,798.20 is: 1,080,943,197.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,404,823.80 : 1,815,607,235.70 = 720,628,798.20 : x
  2. Step 2: Convert to fraction form
    1,210,404,823.80/1,815,607,235.70 = 720,628,798.20/x
  3. Step 3: Cross multiply
    1,210,404,823.80x = 1,815,607,235.70 × 720,628,798.20
  4. Step 4: Simplify right side
    1,210,404,823.80x = 1,308,378,860,265,715,200
  5. Step 5: Solve for x
    x = 1,308,378,860,265,715,200/1,210,404,823.80
  6. Step 6: Final answer
    x = 1,080,943,197.30

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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.