Home / 743,019.08-1,025,295.36-420,666.26

Finding the Fourth Proportional to 743,019.08, 1,025,295.36 and 420,666.26

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Solution

The fourth proportional to 743,019.08, 1,025,295.36 and 420,666.26 is: 580,479.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,019.08 : 1,025,295.36 = 420,666.26 : x
  2. Step 2: Convert to fraction form
    743,019.08/1,025,295.36 = 420,666.26/x
  3. Step 3: Cross multiply
    743,019.08x = 1,025,295.36 × 420,666.26
  4. Step 4: Simplify right side
    743,019.08x = 431,307,164,486.55
  5. Step 5: Solve for x
    x = 431,307,164,486.55/743,019.08
  6. Step 6: Final answer
    x = 580,479.26

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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.