Home / 869,099.40-1,303,211.70-514,222.20

Finding the Fourth Proportional to 869,099.40, 1,303,211.70 and 514,222.20

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Solution

The fourth proportional to 869,099.40, 1,303,211.70 and 514,222.20 is: 771,074.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,099.40 : 1,303,211.70 = 514,222.20 : x
  2. Step 2: Convert to fraction form
    869,099.40/1,303,211.70 = 514,222.20/x
  3. Step 3: Cross multiply
    869,099.40x = 1,303,211.70 × 514,222.20
  4. Step 4: Simplify right side
    869,099.40x = 670,140,387,439.74
  5. Step 5: Solve for x
    x = 670,140,387,439.74/869,099.40
  6. Step 6: Final answer
    x = 771,074.50

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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.