Home / 830,418.38-1,145,977.37-448,445.16

Finding the Fourth Proportional to 830,418.38, 1,145,977.37 and 448,445.16

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Solution

The fourth proportional to 830,418.38, 1,145,977.37 and 448,445.16 is: 618,854.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,418.38 : 1,145,977.37 = 448,445.16 : x
  2. Step 2: Convert to fraction form
    830,418.38/1,145,977.37 = 448,445.16/x
  3. Step 3: Cross multiply
    830,418.38x = 1,145,977.37 × 448,445.16
  4. Step 4: Simplify right side
    830,418.38x = 513,908,004,485.47
  5. Step 5: Solve for x
    x = 513,908,004,485.47/830,418.38
  6. Step 6: Final answer
    x = 618,854.32

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Double scale
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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.