Home / 1,319,501.10-1,978,364.70-520,371.30

Finding the Fourth Proportional to 1,319,501.10, 1,978,364.70 and 520,371.30

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Solution

The fourth proportional to 1,319,501.10, 1,978,364.70 and 520,371.30 is: 780,207.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,501.10 : 1,978,364.70 = 520,371.30 : x
  2. Step 2: Convert to fraction form
    1,319,501.10/1,978,364.70 = 520,371.30/x
  3. Step 3: Cross multiply
    1,319,501.10x = 1,978,364.70 × 520,371.30
  4. Step 4: Simplify right side
    1,319,501.10x = 1,029,484,210,813.11
  5. Step 5: Solve for x
    x = 1,029,484,210,813.11/1,319,501.10
  6. Step 6: Final answer
    x = 780,207.16

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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.