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Finding the Fourth Proportional to 611,375.40, 916,233.66 and 345,004.20

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Solution

The fourth proportional to 611,375.40, 916,233.66 and 345,004.20 is: 517,038.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,375.40 : 916,233.66 = 345,004.20 : x
  2. Step 2: Convert to fraction form
    611,375.40/916,233.66 = 345,004.20/x
  3. Step 3: Cross multiply
    611,375.40x = 916,233.66 × 345,004.20
  4. Step 4: Simplify right side
    611,375.40x = 316,104,460,881.37
  5. Step 5: Solve for x
    x = 316,104,460,881.37/611,375.40
  6. Step 6: Final answer
    x = 517,038.24

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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.