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Finding the Fourth Proportional to 901,912, 1,244,588.64 and 499,472.32

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Solution

The fourth proportional to 901,912, 1,244,588.64 and 499,472.32 is: 689,244.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    901,912 : 1,244,588.64 = 499,472.32 : x
  2. Step 2: Convert to fraction form
    901,912/1,244,588.64 = 499,472.32/x
  3. Step 3: Cross multiply
    901,912x = 1,244,588.64 × 499,472.32
  4. Step 4: Simplify right side
    901,912x = 621,637,575,466.45
  5. Step 5: Solve for x
    x = 621,637,575,466.45/901,912
  6. Step 6: Final answer
    x = 689,244.16

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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.