Home / 487,621.70-731,432.55-480,623.30

Finding the Fourth Proportional to 487,621.70, 731,432.55 and 480,623.30

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Solution

The fourth proportional to 487,621.70, 731,432.55 and 480,623.30 is: 720,934.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,621.70 : 731,432.55 = 480,623.30 : x
  2. Step 2: Convert to fraction form
    487,621.70/731,432.55 = 480,623.30/x
  3. Step 3: Cross multiply
    487,621.70x = 731,432.55 × 480,623.30
  4. Step 4: Simplify right side
    487,621.70x = 351,543,525,908.42
  5. Step 5: Solve for x
    x = 351,543,525,908.42/487,621.70
  6. Step 6: Final answer
    x = 720,934.95

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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.