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Finding the Fourth Proportional to 433,449.44, 597,840.72 and 312,988.40

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Solution

The fourth proportional to 433,449.44, 597,840.72 and 312,988.40 is: 431,693.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    433,449.44 : 597,840.72 = 312,988.40 : x
  2. Step 2: Convert to fraction form
    433,449.44/597,840.72 = 312,988.40/x
  3. Step 3: Cross multiply
    433,449.44x = 597,840.72 × 312,988.40
  4. Step 4: Simplify right side
    433,449.44x = 187,117,210,407.65
  5. Step 5: Solve for x
    x = 187,117,210,407.65/433,449.44
  6. Step 6: Final answer
    x = 431,693.28

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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.