Home / 745,157.88-1,117,872.90-345,743.64

Finding the Fourth Proportional to 745,157.88, 1,117,872.90 and 345,743.64

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Solution

The fourth proportional to 745,157.88, 1,117,872.90 and 345,743.64 is: 518,678.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,157.88 : 1,117,872.90 = 345,743.64 : x
  2. Step 2: Convert to fraction form
    745,157.88/1,117,872.90 = 345,743.64/x
  3. Step 3: Cross multiply
    745,157.88x = 1,117,872.90 × 345,743.64
  4. Step 4: Simplify right side
    745,157.88x = 386,497,445,503.36
  5. Step 5: Solve for x
    x = 386,497,445,503.36/745,157.88
  6. Step 6: Final answer
    x = 518,678.60

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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.