Home / 818,656.16-1,228,115.45-345,411.23

Finding the Fourth Proportional to 818,656.16, 1,228,115.45 and 345,411.23

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Solution

The fourth proportional to 818,656.16, 1,228,115.45 and 345,411.23 is: 518,172.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,656.16 : 1,228,115.45 = 345,411.23 : x
  2. Step 2: Convert to fraction form
    818,656.16/1,228,115.45 = 345,411.23/x
  3. Step 3: Cross multiply
    818,656.16x = 1,228,115.45 × 345,411.23
  4. Step 4: Simplify right side
    818,656.16x = 424,204,862,889.45
  5. Step 5: Solve for x
    x = 424,204,862,889.45/818,656.16
  6. Step 6: Final answer
    x = 518,172.20

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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.