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Finding the Fourth Proportional to 620,485.70, 930,294.37 and 316,973.84

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Solution

The fourth proportional to 620,485.70, 930,294.37 and 316,973.84 is: 475,238.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,485.70 : 930,294.37 = 316,973.84 : x
  2. Step 2: Convert to fraction form
    620,485.70/930,294.37 = 316,973.84/x
  3. Step 3: Cross multiply
    620,485.70x = 930,294.37 × 316,973.84
  4. Step 4: Simplify right side
    620,485.70x = 294,878,980,322.58
  5. Step 5: Solve for x
    x = 294,878,980,322.58/620,485.70
  6. Step 6: Final answer
    x = 475,238.96

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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.