Home / 810,003.40-1,215,005.10-652,539.40

Finding the Fourth Proportional to 810,003.40, 1,215,005.10 and 652,539.40

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Solution

The fourth proportional to 810,003.40, 1,215,005.10 and 652,539.40 is: 978,809.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,003.40 : 1,215,005.10 = 652,539.40 : x
  2. Step 2: Convert to fraction form
    810,003.40/1,215,005.10 = 652,539.40/x
  3. Step 3: Cross multiply
    810,003.40x = 1,215,005.10 × 652,539.40
  4. Step 4: Simplify right side
    810,003.40x = 792,838,698,950.94
  5. Step 5: Solve for x
    x = 792,838,698,950.94/810,003.40
  6. Step 6: Final answer
    x = 978,809.10

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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.