Home / 849,860.70-1,275,775.20-513,281.40

Finding the Fourth Proportional to 849,860.70, 1,275,775.20 and 513,281.40

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Solution

The fourth proportional to 849,860.70, 1,275,775.20 and 513,281.40 is: 770,516.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    849,860.70 : 1,275,775.20 = 513,281.40 : x
  2. Step 2: Convert to fraction form
    849,860.70/1,275,775.20 = 513,281.40/x
  3. Step 3: Cross multiply
    849,860.70x = 1,275,775.20 × 513,281.40
  4. Step 4: Simplify right side
    849,860.70x = 654,831,680,741.28
  5. Step 5: Solve for x
    x = 654,831,680,741.28/849,860.70
  6. Step 6: Final answer
    x = 770,516.49

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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.