Home / 1,220,346,090.80-1,830,519,136.20-402,415,089.20

Finding the Fourth Proportional to 1,220,346,090.80, 1,830,519,136.20 and 402,415,089.20

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Solution

The fourth proportional to 1,220,346,090.80, 1,830,519,136.20 and 402,415,089.20 is: 603,622,633.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,346,090.80 : 1,830,519,136.20 = 402,415,089.20 : x
  2. Step 2: Convert to fraction form
    1,220,346,090.80/1,830,519,136.20 = 402,415,089.20/x
  3. Step 3: Cross multiply
    1,220,346,090.80x = 1,830,519,136.20 × 402,415,089.20
  4. Step 4: Simplify right side
    1,220,346,090.80x = 736,628,521,476,229,888
  5. Step 5: Solve for x
    x = 736,628,521,476,229,888/1,220,346,090.80
  6. Step 6: Final answer
    x = 603,622,633.80

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Double scale
Find fourth proportional to 1,220,346,091.80, 1,830,519,137.70 and 402,415,090.20
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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.