Home / 1,421,435.18-1,961,580.72-776,855.18

Finding the Fourth Proportional to 1,421,435.18, 1,961,580.72 and 776,855.18

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Solution

The fourth proportional to 1,421,435.18, 1,961,580.72 and 776,855.18 is: 1,072,060.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,435.18 : 1,961,580.72 = 776,855.18 : x
  2. Step 2: Convert to fraction form
    1,421,435.18/1,961,580.72 = 776,855.18/x
  3. Step 3: Cross multiply
    1,421,435.18x = 1,961,580.72 × 776,855.18
  4. Step 4: Simplify right side
    1,421,435.18x = 1,523,864,143,320.13
  5. Step 5: Solve for x
    x = 1,523,864,143,320.13/1,421,435.18
  6. Step 6: Final answer
    x = 1,072,060.24

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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.