Home / 821,460.10-1,230,865.35-465,415.30

Finding the Fourth Proportional to 821,460.10, 1,230,865.35 and 465,415.30

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Solution

The fourth proportional to 821,460.10, 1,230,865.35 and 465,415.30 is: 697,372.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,460.10 : 1,230,865.35 = 465,415.30 : x
  2. Step 2: Convert to fraction form
    821,460.10/1,230,865.35 = 465,415.30/x
  3. Step 3: Cross multiply
    821,460.10x = 1,230,865.35 × 465,415.30
  4. Step 4: Simplify right side
    821,460.10x = 572,863,566,129.86
  5. Step 5: Solve for x
    x = 572,863,566,129.86/821,460.10
  6. Step 6: Final answer
    x = 697,372.36

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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.