Home / 1,456,140.70-2,184,211.05-391,290.40

Finding the Fourth Proportional to 1,456,140.70, 2,184,211.05 and 391,290.40

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Solution

The fourth proportional to 1,456,140.70, 2,184,211.05 and 391,290.40 is: 586,935.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,456,140.70 : 2,184,211.05 = 391,290.40 : x
  2. Step 2: Convert to fraction form
    1,456,140.70/2,184,211.05 = 391,290.40/x
  3. Step 3: Cross multiply
    1,456,140.70x = 2,184,211.05 × 391,290.40
  4. Step 4: Simplify right side
    1,456,140.70x = 854,660,815,438.92
  5. Step 5: Solve for x
    x = 854,660,815,438.92/1,456,140.70
  6. Step 6: Final answer
    x = 586,935.60

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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.