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Finding the Fourth Proportional to 656,059.07, 984,399.65 and 390,344.51

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Solution

The fourth proportional to 656,059.07, 984,399.65 and 390,344.51 is: 585,701.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,059.07 : 984,399.65 = 390,344.51 : x
  2. Step 2: Convert to fraction form
    656,059.07/984,399.65 = 390,344.51/x
  3. Step 3: Cross multiply
    656,059.07x = 984,399.65 × 390,344.51
  4. Step 4: Simplify right side
    656,059.07x = 384,254,999,023.42
  5. Step 5: Solve for x
    x = 384,254,999,023.42/656,059.07
  6. Step 6: Final answer
    x = 585,701.83

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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.