Home / 913,114.80-1,369,672.20-414,478.80

Finding the Fourth Proportional to 913,114.80, 1,369,672.20 and 414,478.80

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Solution

The fourth proportional to 913,114.80, 1,369,672.20 and 414,478.80 is: 621,718.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,114.80 : 1,369,672.20 = 414,478.80 : x
  2. Step 2: Convert to fraction form
    913,114.80/1,369,672.20 = 414,478.80/x
  3. Step 3: Cross multiply
    913,114.80x = 1,369,672.20 × 414,478.80
  4. Step 4: Simplify right side
    913,114.80x = 567,700,089,849.36
  5. Step 5: Solve for x
    x = 567,700,089,849.36/913,114.80
  6. Step 6: Final answer
    x = 621,718.20

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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.