Home / 630,789.12-870,359.04-362,465.28

Finding the Fourth Proportional to 630,789.12, 870,359.04 and 362,465.28

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Solution

The fourth proportional to 630,789.12, 870,359.04 and 362,465.28 is: 500,127.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,789.12 : 870,359.04 = 362,465.28 : x
  2. Step 2: Convert to fraction form
    630,789.12/870,359.04 = 362,465.28/x
  3. Step 3: Cross multiply
    630,789.12x = 870,359.04 × 362,465.28
  4. Step 4: Simplify right side
    630,789.12x = 315,474,933,134.13
  5. Step 5: Solve for x
    x = 315,474,933,134.13/630,789.12
  6. Step 6: Final answer
    x = 500,127.42

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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.