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Finding the Fourth Proportional to 656,290.80, 905,700.12 and 369,795.12

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Solution

The fourth proportional to 656,290.80, 905,700.12 and 369,795.12 is: 510,327.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,290.80 : 905,700.12 = 369,795.12 : x
  2. Step 2: Convert to fraction form
    656,290.80/905,700.12 = 369,795.12/x
  3. Step 3: Cross multiply
    656,290.80x = 905,700.12 × 369,795.12
  4. Step 4: Simplify right side
    656,290.80x = 334,923,484,559.41
  5. Step 5: Solve for x
    x = 334,923,484,559.41/656,290.80
  6. Step 6: Final answer
    x = 510,327.87

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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.