Home / 912,005.80-1,368,008.70-439,613.80

Finding the Fourth Proportional to 912,005.80, 1,368,008.70 and 439,613.80

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Solution

The fourth proportional to 912,005.80, 1,368,008.70 and 439,613.80 is: 659,420.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,005.80 : 1,368,008.70 = 439,613.80 : x
  2. Step 2: Convert to fraction form
    912,005.80/1,368,008.70 = 439,613.80/x
  3. Step 3: Cross multiply
    912,005.80x = 1,368,008.70 × 439,613.80
  4. Step 4: Simplify right side
    912,005.80x = 601,395,503,040.06
  5. Step 5: Solve for x
    x = 601,395,503,040.06/912,005.80
  6. Step 6: Final answer
    x = 659,420.70

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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.