Home / 855,421.08-1,180,401.11-511,188.69

Finding the Fourth Proportional to 855,421.08, 1,180,401.11 and 511,188.69

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Solution

The fourth proportional to 855,421.08, 1,180,401.11 and 511,188.69 is: 705,392.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,421.08 : 1,180,401.11 = 511,188.69 : x
  2. Step 2: Convert to fraction form
    855,421.08/1,180,401.11 = 511,188.69/x
  3. Step 3: Cross multiply
    855,421.08x = 1,180,401.11 × 511,188.69
  4. Step 4: Simplify right side
    855,421.08x = 603,407,697,490.51
  5. Step 5: Solve for x
    x = 603,407,697,490.51/855,421.08
  6. Step 6: Final answer
    x = 705,392.60

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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.