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Finding the Fourth Proportional to 675,021.80, 1,012,532.70 and 556,826.60

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Solution

The fourth proportional to 675,021.80, 1,012,532.70 and 556,826.60 is: 835,239.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,021.80 : 1,012,532.70 = 556,826.60 : x
  2. Step 2: Convert to fraction form
    675,021.80/1,012,532.70 = 556,826.60/x
  3. Step 3: Cross multiply
    675,021.80x = 1,012,532.70 × 556,826.60
  4. Step 4: Simplify right side
    675,021.80x = 563,805,140,729.82
  5. Step 5: Solve for x
    x = 563,805,140,729.82/675,021.80
  6. Step 6: Final answer
    x = 835,239.90

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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.