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Finding the Fourth Proportional to 487,416.40, 730,140.45 and 276,808.30

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Solution

The fourth proportional to 487,416.40, 730,140.45 and 276,808.30 is: 414,653.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,416.40 : 730,140.45 = 276,808.30 : x
  2. Step 2: Convert to fraction form
    487,416.40/730,140.45 = 276,808.30/x
  3. Step 3: Cross multiply
    487,416.40x = 730,140.45 × 276,808.30
  4. Step 4: Simplify right side
    487,416.40x = 202,108,936,725.74
  5. Step 5: Solve for x
    x = 202,108,936,725.74/487,416.40
  6. Step 6: Final answer
    x = 414,653.54

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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.