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Finding the Fourth Proportional to 665,724.81, 918,698.07 and 359,800.24

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Solution

The fourth proportional to 665,724.81, 918,698.07 and 359,800.24 is: 496,523.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,724.81 : 918,698.07 = 359,800.24 : x
  2. Step 2: Convert to fraction form
    665,724.81/918,698.07 = 359,800.24/x
  3. Step 3: Cross multiply
    665,724.81x = 918,698.07 × 359,800.24
  4. Step 4: Simplify right side
    665,724.81x = 330,547,786,905.97
  5. Step 5: Solve for x
    x = 330,547,786,905.97/665,724.81
  6. Step 6: Final answer
    x = 496,523.16

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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.