Home / 630,631.17-870,289.38-344,169.81

Finding the Fourth Proportional to 630,631.17, 870,289.38 and 344,169.81

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Solution

The fourth proportional to 630,631.17, 870,289.38 and 344,169.81 is: 474,964.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,631.17 : 870,289.38 = 344,169.81 : x
  2. Step 2: Convert to fraction form
    630,631.17/870,289.38 = 344,169.81/x
  3. Step 3: Cross multiply
    630,631.17x = 870,289.38 × 344,169.81
  4. Step 4: Simplify right side
    630,631.17x = 299,527,330,559.62
  5. Step 5: Solve for x
    x = 299,527,330,559.62/630,631.17
  6. Step 6: Final answer
    x = 474,964.36

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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.