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Finding the Fourth Proportional to 691,434.72, 954,178.56 and 373,482.72

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Solution

The fourth proportional to 691,434.72, 954,178.56 and 373,482.72 is: 515,405.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,434.72 : 954,178.56 = 373,482.72 : x
  2. Step 2: Convert to fraction form
    691,434.72/954,178.56 = 373,482.72/x
  3. Step 3: Cross multiply
    691,434.72x = 954,178.56 × 373,482.72
  4. Step 4: Simplify right side
    691,434.72x = 356,369,203,954.48
  5. Step 5: Solve for x
    x = 356,369,203,954.48/691,434.72
  6. Step 6: Final answer
    x = 515,405.42

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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.