Home / 916,431.60-1,374,647.40-491,278.80

Finding the Fourth Proportional to 916,431.60, 1,374,647.40 and 491,278.80

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Solution

The fourth proportional to 916,431.60, 1,374,647.40 and 491,278.80 is: 736,918.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,431.60 : 1,374,647.40 = 491,278.80 : x
  2. Step 2: Convert to fraction form
    916,431.60/1,374,647.40 = 491,278.80/x
  3. Step 3: Cross multiply
    916,431.60x = 1,374,647.40 × 491,278.80
  4. Step 4: Simplify right side
    916,431.60x = 675,335,125,095.12
  5. Step 5: Solve for x
    x = 675,335,125,095.12/916,431.60
  6. Step 6: Final answer
    x = 736,918.20

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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.