Home / 487,629.70-731,444.55-480,631.30

Finding the Fourth Proportional to 487,629.70, 731,444.55 and 480,631.30

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Solution

The fourth proportional to 487,629.70, 731,444.55 and 480,631.30 is: 720,946.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,629.70 : 731,444.55 = 480,631.30 : x
  2. Step 2: Convert to fraction form
    487,629.70/731,444.55 = 480,631.30/x
  3. Step 3: Cross multiply
    487,629.70x = 731,444.55 × 480,631.30
  4. Step 4: Simplify right side
    487,629.70x = 351,555,144,944.42
  5. Step 5: Solve for x
    x = 351,555,144,944.42/487,629.70
  6. Step 6: Final answer
    x = 720,946.95

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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.