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Finding the Fourth Proportional to 620,703.48, 931,463.52 and 340,417.56

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Solution

The fourth proportional to 620,703.48, 931,463.52 and 340,417.56 is: 510,850.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,703.48 : 931,463.52 = 340,417.56 : x
  2. Step 2: Convert to fraction form
    620,703.48/931,463.52 = 340,417.56/x
  3. Step 3: Cross multiply
    620,703.48x = 931,463.52 × 340,417.56
  4. Step 4: Simplify right side
    620,703.48x = 317,086,538,707.41
  5. Step 5: Solve for x
    x = 317,086,538,707.41/620,703.48
  6. Step 6: Final answer
    x = 510,850.27

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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.