Home / 763,730.02-1,145,742.55-290,378.57

Finding the Fourth Proportional to 763,730.02, 1,145,742.55 and 290,378.57

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Solution

The fourth proportional to 763,730.02, 1,145,742.55 and 290,378.57 is: 435,623.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,730.02 : 1,145,742.55 = 290,378.57 : x
  2. Step 2: Convert to fraction form
    763,730.02/1,145,742.55 = 290,378.57/x
  3. Step 3: Cross multiply
    763,730.02x = 1,145,742.55 × 290,378.57
  4. Step 4: Simplify right side
    763,730.02x = 332,699,084,880.68
  5. Step 5: Solve for x
    x = 332,699,084,880.68/763,730.02
  6. Step 6: Final answer
    x = 435,623.95

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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.