Home / 557,731.50-769,904.93-376,688.65

Finding the Fourth Proportional to 557,731.50, 769,904.93 and 376,688.65

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Solution

The fourth proportional to 557,731.50, 769,904.93 and 376,688.65 is: 519,989.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,731.50 : 769,904.93 = 376,688.65 : x
  2. Step 2: Convert to fraction form
    557,731.50/769,904.93 = 376,688.65/x
  3. Step 3: Cross multiply
    557,731.50x = 769,904.93 × 376,688.65
  4. Step 4: Simplify right side
    557,731.50x = 290,014,450,541.37
  5. Step 5: Solve for x
    x = 290,014,450,541.37/557,731.50
  6. Step 6: Final answer
    x = 519,989.37

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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.