Home / 826,636.80-1,238,774.40-470,899.20

Finding the Fourth Proportional to 826,636.80, 1,238,774.40 and 470,899.20

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Solution

The fourth proportional to 826,636.80, 1,238,774.40 and 470,899.20 is: 705,676.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,636.80 : 1,238,774.40 = 470,899.20 : x
  2. Step 2: Convert to fraction form
    826,636.80/1,238,774.40 = 470,899.20/x
  3. Step 3: Cross multiply
    826,636.80x = 1,238,774.40 × 470,899.20
  4. Step 4: Simplify right side
    826,636.80x = 583,337,873,940.48
  5. Step 5: Solve for x
    x = 583,337,873,940.48/826,636.80
  6. Step 6: Final answer
    x = 705,676.15

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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.