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Finding the Fourth Proportional to 666,729.34, 920,088.81 and 360,805.64

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Solution

The fourth proportional to 666,729.34, 920,088.81 and 360,805.64 is: 497,913.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,729.34 : 920,088.81 = 360,805.64 : x
  2. Step 2: Convert to fraction form
    666,729.34/920,088.81 = 360,805.64/x
  3. Step 3: Cross multiply
    666,729.34x = 920,088.81 × 360,805.64
  4. Step 4: Simplify right side
    666,729.34x = 331,973,230,144.86
  5. Step 5: Solve for x
    x = 331,973,230,144.86/666,729.34
  6. Step 6: Final answer
    x = 497,913.04

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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.