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Finding the Fourth Proportional to 648,283.70, 894,876.69 and 487,602.76

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Solution

The fourth proportional to 648,283.70, 894,876.69 and 487,602.76 is: 673,076.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,283.70 : 894,876.69 = 487,602.76 : x
  2. Step 2: Convert to fraction form
    648,283.70/894,876.69 = 487,602.76/x
  3. Step 3: Cross multiply
    648,283.70x = 894,876.69 × 487,602.76
  4. Step 4: Simplify right side
    648,283.70x = 436,344,343,903.66
  5. Step 5: Solve for x
    x = 436,344,343,903.66/648,283.70
  6. Step 6: Final answer
    x = 673,076.22

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.