Home / 755,671.08-1,042,746.66-428,880.15

Finding the Fourth Proportional to 755,671.08, 1,042,746.66 and 428,880.15

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Solution

The fourth proportional to 755,671.08, 1,042,746.66 and 428,880.15 is: 591,809.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    755,671.08 : 1,042,746.66 = 428,880.15 : x
  2. Step 2: Convert to fraction form
    755,671.08/1,042,746.66 = 428,880.15/x
  3. Step 3: Cross multiply
    755,671.08x = 1,042,746.66 × 428,880.15
  4. Step 4: Simplify right side
    755,671.08x = 447,213,343,952.80
  5. Step 5: Solve for x
    x = 447,213,343,952.80/755,671.08
  6. Step 6: Final answer
    x = 591,809.53

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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.