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Finding the Fourth Proportional to 715,558.86, 987,107.31 and 545,497.74

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Solution

The fourth proportional to 715,558.86, 987,107.31 and 545,497.74 is: 752,509.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,558.86 : 987,107.31 = 545,497.74 : x
  2. Step 2: Convert to fraction form
    715,558.86/987,107.31 = 545,497.74/x
  3. Step 3: Cross multiply
    715,558.86x = 987,107.31 × 545,497.74
  4. Step 4: Simplify right side
    715,558.86x = 538,464,806,742.48
  5. Step 5: Solve for x
    x = 538,464,806,742.48/715,558.86
  6. Step 6: Final answer
    x = 752,509.45

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1.5x scale

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.