Home / 675,837.80-1,013,756.70-427,620.20

Finding the Fourth Proportional to 675,837.80, 1,013,756.70 and 427,620.20

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Solution

The fourth proportional to 675,837.80, 1,013,756.70 and 427,620.20 is: 641,430.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,837.80 : 1,013,756.70 = 427,620.20 : x
  2. Step 2: Convert to fraction form
    675,837.80/1,013,756.70 = 427,620.20/x
  3. Step 3: Cross multiply
    675,837.80x = 1,013,756.70 × 427,620.20
  4. Step 4: Simplify right side
    675,837.80x = 433,502,842,805.34
  5. Step 5: Solve for x
    x = 433,502,842,805.34/675,837.80
  6. Step 6: Final answer
    x = 641,430.30

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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.