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Finding the Fourth Proportional to 690,606.72, 953,184 and 464,120.88

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Solution

The fourth proportional to 690,606.72, 953,184 and 464,120.88 is: 640,585.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,606.72 : 953,184 = 464,120.88 : x
  2. Step 2: Convert to fraction form
    690,606.72/953,184 = 464,120.88/x
  3. Step 3: Cross multiply
    690,606.72x = 953,184 × 464,120.88
  4. Step 4: Simplify right side
    690,606.72x = 442,392,596,881.92
  5. Step 5: Solve for x
    x = 442,392,596,881.92/690,606.72
  6. Step 6: Final answer
    x = 640,585.42

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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.