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Finding the Fourth Proportional to 709,613.20, 1,064,722.20 and 372,912.40

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Solution

The fourth proportional to 709,613.20, 1,064,722.20 and 372,912.40 is: 559,527.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,613.20 : 1,064,722.20 = 372,912.40 : x
  2. Step 2: Convert to fraction form
    709,613.20/1,064,722.20 = 372,912.40/x
  3. Step 3: Cross multiply
    709,613.20x = 1,064,722.20 × 372,912.40
  4. Step 4: Simplify right side
    709,613.20x = 397,048,110,935.28
  5. Step 5: Solve for x
    x = 397,048,110,935.28/709,613.20
  6. Step 6: Final answer
    x = 559,527.52

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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.