Home / 612,952.96-845,395.80-398,162.22

Finding the Fourth Proportional to 612,952.96, 845,395.80 and 398,162.22

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Solution

The fourth proportional to 612,952.96, 845,395.80 and 398,162.22 is: 549,152.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,952.96 : 845,395.80 = 398,162.22 : x
  2. Step 2: Convert to fraction form
    612,952.96/845,395.80 = 398,162.22/x
  3. Step 3: Cross multiply
    612,952.96x = 845,395.80 × 398,162.22
  4. Step 4: Simplify right side
    612,952.96x = 336,604,668,506.68
  5. Step 5: Solve for x
    x = 336,604,668,506.68/612,952.96
  6. Step 6: Final answer
    x = 549,152.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.