Home / 1,315,980.09-1,974,700.04-642,066.93

Finding the Fourth Proportional to 1,315,980.09, 1,974,700.04 and 642,066.93

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Solution

The fourth proportional to 1,315,980.09, 1,974,700.04 and 642,066.93 is: 963,456.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,980.09 : 1,974,700.04 = 642,066.93 : x
  2. Step 2: Convert to fraction form
    1,315,980.09/1,974,700.04 = 642,066.93/x
  3. Step 3: Cross multiply
    1,315,980.09x = 1,974,700.04 × 642,066.93
  4. Step 4: Simplify right side
    1,315,980.09x = 1,267,889,589,143.34
  5. Step 5: Solve for x
    x = 1,267,889,589,143.34/1,315,980.09
  6. Step 6: Final answer
    x = 963,456.51

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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.