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Finding the Fourth Proportional to 665,748.48, 918,903.78 and 410,953.26

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Solution

The fourth proportional to 665,748.48, 918,903.78 and 410,953.26 is: 567,220.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,748.48 : 918,903.78 = 410,953.26 : x
  2. Step 2: Convert to fraction form
    665,748.48/918,903.78 = 410,953.26/x
  3. Step 3: Cross multiply
    665,748.48x = 918,903.78 × 410,953.26
  4. Step 4: Simplify right side
    665,748.48x = 377,626,504,017.32
  5. Step 5: Solve for x
    x = 377,626,504,017.32/665,748.48
  6. Step 6: Final answer
    x = 567,220.98

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Double scale
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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.