Home / 855,420.45-1,180,400.24-511,188.07

Finding the Fourth Proportional to 855,420.45, 1,180,400.24 and 511,188.07

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Solution

The fourth proportional to 855,420.45, 1,180,400.24 and 511,188.07 is: 705,391.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,420.45 : 1,180,400.24 = 511,188.07 : x
  2. Step 2: Convert to fraction form
    855,420.45/1,180,400.24 = 511,188.07/x
  3. Step 3: Cross multiply
    855,420.45x = 1,180,400.24 × 511,188.07
  4. Step 4: Simplify right side
    855,420.45x = 603,406,518,840.11
  5. Step 5: Solve for x
    x = 603,406,518,840.11/855,420.45
  6. Step 6: Final answer
    x = 705,391.74

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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.