Home / 830,855.40-1,246,283.10-514,285.80

Finding the Fourth Proportional to 830,855.40, 1,246,283.10 and 514,285.80

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Solution

The fourth proportional to 830,855.40, 1,246,283.10 and 514,285.80 is: 771,428.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,855.40 : 1,246,283.10 = 514,285.80 : x
  2. Step 2: Convert to fraction form
    830,855.40/1,246,283.10 = 514,285.80/x
  3. Step 3: Cross multiply
    830,855.40x = 1,246,283.10 × 514,285.80
  4. Step 4: Simplify right side
    830,855.40x = 640,945,701,109.98
  5. Step 5: Solve for x
    x = 640,945,701,109.98/830,855.40
  6. Step 6: Final answer
    x = 771,428.70

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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.