Home / 763,728.48-1,145,740.23-290,377.04

Finding the Fourth Proportional to 763,728.48, 1,145,740.23 and 290,377.04

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Solution

The fourth proportional to 763,728.48, 1,145,740.23 and 290,377.04 is: 435,621.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,728.48 : 1,145,740.23 = 290,377.04 : x
  2. Step 2: Convert to fraction form
    763,728.48/1,145,740.23 = 290,377.04/x
  3. Step 3: Cross multiply
    763,728.48x = 1,145,740.23 × 290,377.04
  4. Step 4: Simplify right side
    763,728.48x = 332,696,650,867.62
  5. Step 5: Solve for x
    x = 332,696,650,867.62/763,728.48
  6. Step 6: Final answer
    x = 435,621.64

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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.