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Finding the Fourth Proportional to 691,407.40, 954,142.02 and 373,455.40

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Solution

The fourth proportional to 691,407.40, 954,142.02 and 373,455.40 is: 515,368.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,407.40 : 954,142.02 = 373,455.40 : x
  2. Step 2: Convert to fraction form
    691,407.40/954,142.02 = 373,455.40/x
  3. Step 3: Cross multiply
    691,407.40x = 954,142.02 × 373,455.40
  4. Step 4: Simplify right side
    691,407.40x = 356,329,489,735.91
  5. Step 5: Solve for x
    x = 356,329,489,735.91/691,407.40
  6. Step 6: Final answer
    x = 515,368.35

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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.