Home / 621,913.04-858,087.76-349,928

Finding the Fourth Proportional to 621,913.04, 858,087.76 and 349,928

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Solution

The fourth proportional to 621,913.04, 858,087.76 and 349,928 is: 482,814.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,913.04 : 858,087.76 = 349,928 : x
  2. Step 2: Convert to fraction form
    621,913.04/858,087.76 = 349,928/x
  3. Step 3: Cross multiply
    621,913.04x = 858,087.76 × 349,928
  4. Step 4: Simplify right side
    621,913.04x = 300,268,933,681.28
  5. Step 5: Solve for x
    x = 300,268,933,681.28/621,913.04
  6. Step 6: Final answer
    x = 482,814.98

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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.