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Finding the Fourth Proportional to 620,677.98, 931,425.21 and 340,392.06

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Solution

The fourth proportional to 620,677.98, 931,425.21 and 340,392.06 is: 510,811.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,677.98 : 931,425.21 = 340,392.06 : x
  2. Step 2: Convert to fraction form
    620,677.98/931,425.21 = 340,392.06/x
  3. Step 3: Cross multiply
    620,677.98x = 931,425.21 × 340,392.06
  4. Step 4: Simplify right side
    620,677.98x = 317,049,745,967.83
  5. Step 5: Solve for x
    x = 317,049,745,967.83/620,677.98
  6. Step 6: Final answer
    x = 510,811.98

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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.