Home / 821,448.60-1,230,848.10-465,403.80

Finding the Fourth Proportional to 821,448.60, 1,230,848.10 and 465,403.80

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Solution

The fourth proportional to 821,448.60, 1,230,848.10 and 465,403.80 is: 697,355.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,448.60 : 1,230,848.10 = 465,403.80 : x
  2. Step 2: Convert to fraction form
    821,448.60/1,230,848.10 = 465,403.80/x
  3. Step 3: Cross multiply
    821,448.60x = 1,230,848.10 × 465,403.80
  4. Step 4: Simplify right side
    821,448.60x = 572,841,382,962.78
  5. Step 5: Solve for x
    x = 572,841,382,962.78/821,448.60
  6. Step 6: Final answer
    x = 697,355.12

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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.