Home / 630,150.27-869,359.81-388,012.92

Finding the Fourth Proportional to 630,150.27, 869,359.81 and 388,012.92

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Solution

The fourth proportional to 630,150.27, 869,359.81 and 388,012.92 is: 535,305.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,150.27 : 869,359.81 = 388,012.92 : x
  2. Step 2: Convert to fraction form
    630,150.27/869,359.81 = 388,012.92/x
  3. Step 3: Cross multiply
    630,150.27x = 869,359.81 × 388,012.92
  4. Step 4: Simplify right side
    630,150.27x = 337,322,840,698.81
  5. Step 5: Solve for x
    x = 337,322,840,698.81/630,150.27
  6. Step 6: Final answer
    x = 535,305.39

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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.