Home / 869,164,090.80-1,303,746,136.20-665,090,746.80

Finding the Fourth Proportional to 869,164,090.80, 1,303,746,136.20 and 665,090,746.80

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Solution

The fourth proportional to 869,164,090.80, 1,303,746,136.20 and 665,090,746.80 is: 997,636,120.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,164,090.80 : 1,303,746,136.20 = 665,090,746.80 : x
  2. Step 2: Convert to fraction form
    869,164,090.80/1,303,746,136.20 = 665,090,746.80/x
  3. Step 3: Cross multiply
    869,164,090.80x = 1,303,746,136.20 × 665,090,746.80
  4. Step 4: Simplify right side
    869,164,090.80x = 867,109,491,362,872,448
  5. Step 5: Solve for x
    x = 867,109,491,362,872,448/869,164,090.80
  6. Step 6: Final answer
    x = 997,636,120.20

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Double scale
Find fourth proportional to 869,164,091.80, 1,303,746,137.70 and 665,090,747.80
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.