Home / 811,404.70-1,119,361.43-525,017.05

Finding the Fourth Proportional to 811,404.70, 1,119,361.43 and 525,017.05

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Solution

The fourth proportional to 811,404.70, 1,119,361.43 and 525,017.05 is: 724,279.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,404.70 : 1,119,361.43 = 525,017.05 : x
  2. Step 2: Convert to fraction form
    811,404.70/1,119,361.43 = 525,017.05/x
  3. Step 3: Cross multiply
    811,404.70x = 1,119,361.43 × 525,017.05
  4. Step 4: Simplify right side
    811,404.70x = 587,683,834,376.52
  5. Step 5: Solve for x
    x = 587,683,834,376.52/811,404.70
  6. Step 6: Final answer
    x = 724,279.56

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.