Home / 810,900.42-1,118,945.84-448,275.57

Finding the Fourth Proportional to 810,900.42, 1,118,945.84 and 448,275.57

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Solution

The fourth proportional to 810,900.42, 1,118,945.84 and 448,275.57 is: 618,566.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,900.42 : 1,118,945.84 = 448,275.57 : x
  2. Step 2: Convert to fraction form
    810,900.42/1,118,945.84 = 448,275.57/x
  3. Step 3: Cross multiply
    810,900.42x = 1,118,945.84 × 448,275.57
  4. Step 4: Simplify right side
    810,900.42x = 501,596,078,630.40
  5. Step 5: Solve for x
    x = 501,596,078,630.40/810,900.42
  6. Step 6: Final answer
    x = 618,566.80

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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.