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Finding the Fourth Proportional to 648,001.49, 894,242.61 and 361,521.63

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Solution

The fourth proportional to 648,001.49, 894,242.61 and 361,521.63 is: 498,900.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,001.49 : 894,242.61 = 361,521.63 : x
  2. Step 2: Convert to fraction form
    648,001.49/894,242.61 = 361,521.63/x
  3. Step 3: Cross multiply
    648,001.49x = 894,242.61 × 361,521.63
  4. Step 4: Simplify right side
    648,001.49x = 323,288,045,982.65
  5. Step 5: Solve for x
    x = 323,288,045,982.65/648,001.49
  6. Step 6: Final answer
    x = 498,900.16

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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.