Home / 912,853.46-1,369,311.42-313,809.50

Finding the Fourth Proportional to 912,853.46, 1,369,311.42 and 313,809.50

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Solution

The fourth proportional to 912,853.46, 1,369,311.42 and 313,809.50 is: 470,724.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,853.46 : 1,369,311.42 = 313,809.50 : x
  2. Step 2: Convert to fraction form
    912,853.46/1,369,311.42 = 313,809.50/x
  3. Step 3: Cross multiply
    912,853.46x = 1,369,311.42 × 313,809.50
  4. Step 4: Simplify right side
    912,853.46x = 429,702,932,054.49
  5. Step 5: Solve for x
    x = 429,702,932,054.49/912,853.46
  6. Step 6: Final answer
    x = 470,724.99

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.