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Finding the Fourth Proportional to 826,130.64, 1,238,696.16 and 370,638.48

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Solution

The fourth proportional to 826,130.64, 1,238,696.16 and 370,638.48 is: 555,733.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,130.64 : 1,238,696.16 = 370,638.48 : x
  2. Step 2: Convert to fraction form
    826,130.64/1,238,696.16 = 370,638.48/x
  3. Step 3: Cross multiply
    826,130.64x = 1,238,696.16 × 370,638.48
  4. Step 4: Simplify right side
    826,130.64x = 459,108,461,924.24
  5. Step 5: Solve for x
    x = 459,108,461,924.24/826,130.64
  6. Step 6: Final answer
    x = 555,733.49

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.