Home / 1,278,387.37-1,918,313.70-520,088.86

Finding the Fourth Proportional to 1,278,387.37, 1,918,313.70 and 520,088.86

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Solution

The fourth proportional to 1,278,387.37, 1,918,313.70 and 520,088.86 is: 780,431.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,387.37 : 1,918,313.70 = 520,088.86 : x
  2. Step 2: Convert to fraction form
    1,278,387.37/1,918,313.70 = 520,088.86/x
  3. Step 3: Cross multiply
    1,278,387.37x = 1,918,313.70 × 520,088.86
  4. Step 4: Simplify right side
    1,278,387.37x = 997,693,585,355.38
  5. Step 5: Solve for x
    x = 997,693,585,355.38/1,278,387.37
  6. Step 6: Final answer
    x = 780,431.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.