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Finding the Fourth Proportional to 617,427.40, 926,724.30 and 381,231.40

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Solution

The fourth proportional to 617,427.40, 926,724.30 and 381,231.40 is: 572,207.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,427.40 : 926,724.30 = 381,231.40 : x
  2. Step 2: Convert to fraction form
    617,427.40/926,724.30 = 381,231.40/x
  3. Step 3: Cross multiply
    617,427.40x = 926,724.30 × 381,231.40
  4. Step 4: Simplify right side
    617,427.40x = 353,296,402,303.02
  5. Step 5: Solve for x
    x = 353,296,402,303.02/617,427.40
  6. Step 6: Final answer
    x = 572,207.20

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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.