Home / 1,082,312.95-1,623,940.31-678,430.77

Finding the Fourth Proportional to 1,082,312.95, 1,623,940.31 and 678,430.77

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Solution

The fourth proportional to 1,082,312.95, 1,623,940.31 and 678,430.77 is: 1,017,941.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,082,312.95 : 1,623,940.31 = 678,430.77 : x
  2. Step 2: Convert to fraction form
    1,082,312.95/1,623,940.31 = 678,430.77/x
  3. Step 3: Cross multiply
    1,082,312.95x = 1,623,940.31 × 678,430.77
  4. Step 4: Simplify right side
    1,082,312.95x = 1,101,731,071,555.18
  5. Step 5: Solve for x
    x = 1,101,731,071,555.18/1,082,312.95
  6. Step 6: Final answer
    x = 1,017,941.32

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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.