Home / 808,567.70-1,212,851.55-509,386.10

Finding the Fourth Proportional to 808,567.70, 1,212,851.55 and 509,386.10

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Solution

The fourth proportional to 808,567.70, 1,212,851.55 and 509,386.10 is: 764,079.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,567.70 : 1,212,851.55 = 509,386.10 : x
  2. Step 2: Convert to fraction form
    808,567.70/1,212,851.55 = 509,386.10/x
  3. Step 3: Cross multiply
    808,567.70x = 1,212,851.55 × 509,386.10
  4. Step 4: Simplify right side
    808,567.70x = 617,809,720,933.46
  5. Step 5: Solve for x
    x = 617,809,720,933.46/808,567.70
  6. Step 6: Final answer
    x = 764,079.15

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Half scale
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Double scale
Find fourth proportional to 808,568.70, 1,212,853.05 and 509,387.10
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.