Home / 1,272,424,467.70-1,908,636,701.55-660,204,435.70

Finding the Fourth Proportional to 1,272,424,467.70, 1,908,636,701.55 and 660,204,435.70

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Solution

The fourth proportional to 1,272,424,467.70, 1,908,636,701.55 and 660,204,435.70 is: 990,306,653.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,424,467.70 : 1,908,636,701.55 = 660,204,435.70 : x
  2. Step 2: Convert to fraction form
    1,272,424,467.70/1,908,636,701.55 = 660,204,435.70/x
  3. Step 3: Cross multiply
    1,272,424,467.70x = 1,908,636,701.55 × 660,204,435.70
  4. Step 4: Simplify right side
    1,272,424,467.70x = 1,260,090,416,503,127,040
  5. Step 5: Solve for x
    x = 1,260,090,416,503,127,040/1,272,424,467.70
  6. Step 6: Final answer
    x = 990,306,653.55

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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.