Home / 951,428.80-1,312,984.32-521,707.84

Finding the Fourth Proportional to 951,428.80, 1,312,984.32 and 521,707.84

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Solution

The fourth proportional to 951,428.80, 1,312,984.32 and 521,707.84 is: 719,963.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    951,428.80 : 1,312,984.32 = 521,707.84 : x
  2. Step 2: Convert to fraction form
    951,428.80/1,312,984.32 = 521,707.84/x
  3. Step 3: Cross multiply
    951,428.80x = 1,312,984.32 × 521,707.84
  4. Step 4: Simplify right side
    951,428.80x = 684,994,213,541.07
  5. Step 5: Solve for x
    x = 684,994,213,541.07/951,428.80
  6. Step 6: Final answer
    x = 719,963.72

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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.