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Finding the Fourth Proportional to 667,007.58, 920,384.91 and 380,510.94

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Solution

The fourth proportional to 667,007.58, 920,384.91 and 380,510.94 is: 525,056.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,007.58 : 920,384.91 = 380,510.94 : x
  2. Step 2: Convert to fraction form
    667,007.58/920,384.91 = 380,510.94/x
  3. Step 3: Cross multiply
    667,007.58x = 920,384.91 × 380,510.94
  4. Step 4: Simplify right side
    667,007.58x = 350,216,527,265.92
  5. Step 5: Solve for x
    x = 350,216,527,265.92/667,007.58
  6. Step 6: Final answer
    x = 525,056.29

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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.