Home / 770,038.20-1,155,136.48-290,669.78

Finding the Fourth Proportional to 770,038.20, 1,155,136.48 and 290,669.78

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Solution

The fourth proportional to 770,038.20, 1,155,136.48 and 290,669.78 is: 436,034.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,038.20 : 1,155,136.48 = 290,669.78 : x
  2. Step 2: Convert to fraction form
    770,038.20/1,155,136.48 = 290,669.78/x
  3. Step 3: Cross multiply
    770,038.20x = 1,155,136.48 × 290,669.78
  4. Step 4: Simplify right side
    770,038.20x = 335,763,268,672.74
  5. Step 5: Solve for x
    x = 335,763,268,672.74/770,038.20
  6. Step 6: Final answer
    x = 436,034.56

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Double scale
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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.