Home / 811,206.90-1,214,259.12-556,999.74

Finding the Fourth Proportional to 811,206.90, 1,214,259.12 and 556,999.74

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Solution

The fourth proportional to 811,206.90, 1,214,259.12 and 556,999.74 is: 833,747.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,206.90 : 1,214,259.12 = 556,999.74 : x
  2. Step 2: Convert to fraction form
    811,206.90/1,214,259.12 = 556,999.74/x
  3. Step 3: Cross multiply
    811,206.90x = 1,214,259.12 × 556,999.74
  4. Step 4: Simplify right side
    811,206.90x = 676,342,014,132.63
  5. Step 5: Solve for x
    x = 676,342,014,132.63/811,206.90
  6. Step 6: Final answer
    x = 833,747.86

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Double scale
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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.