Home / 1,249,280.21-1,724,291.30-812,928.58

Finding the Fourth Proportional to 1,249,280.21, 1,724,291.30 and 812,928.58

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Solution

The fourth proportional to 1,249,280.21, 1,724,291.30 and 812,928.58 is: 1,122,026.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,249,280.21 : 1,724,291.30 = 812,928.58 : x
  2. Step 2: Convert to fraction form
    1,249,280.21/1,724,291.30 = 812,928.58/x
  3. Step 3: Cross multiply
    1,249,280.21x = 1,724,291.30 × 812,928.58
  4. Step 4: Simplify right side
    1,249,280.21x = 1,401,725,678,015.35
  5. Step 5: Solve for x
    x = 1,401,725,678,015.35/1,249,280.21
  6. Step 6: Final answer
    x = 1,122,026.64

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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.