Home / 930,215.40-1,395,323.10-812,117.40

Finding the Fourth Proportional to 930,215.40, 1,395,323.10 and 812,117.40

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Solution

The fourth proportional to 930,215.40, 1,395,323.10 and 812,117.40 is: 1,218,176.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    930,215.40 : 1,395,323.10 = 812,117.40 : x
  2. Step 2: Convert to fraction form
    930,215.40/1,395,323.10 = 812,117.40/x
  3. Step 3: Cross multiply
    930,215.40x = 1,395,323.10 × 812,117.40
  4. Step 4: Simplify right side
    930,215.40x = 1,133,166,168,131.94
  5. Step 5: Solve for x
    x = 1,133,166,168,131.94/930,215.40
  6. Step 6: Final answer
    x = 1,218,176.10

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Double scale
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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.