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Finding the Fourth Proportional to 1,312,784.68, 1,811,598.07 and 724,107.45

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Solution

The fourth proportional to 1,312,784.68, 1,811,598.07 and 724,107.45 is: 999,243.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,784.68 : 1,811,598.07 = 724,107.45 : x
  2. Step 2: Convert to fraction form
    1,312,784.68/1,811,598.07 = 724,107.45/x
  3. Step 3: Cross multiply
    1,312,784.68x = 1,811,598.07 × 724,107.45
  4. Step 4: Simplify right side
    1,312,784.68x = 1,311,791,658,892.62
  5. Step 5: Solve for x
    x = 1,311,791,658,892.62/1,312,784.68
  6. Step 6: Final answer
    x = 999,243.58

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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.