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Finding the Fourth Proportional to 648,533.76, 894,722.40 and 376,555.20

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Solution

The fourth proportional to 648,533.76, 894,722.40 and 376,555.20 is: 519,498.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,533.76 : 894,722.40 = 376,555.20 : x
  2. Step 2: Convert to fraction form
    648,533.76/894,722.40 = 376,555.20/x
  3. Step 3: Cross multiply
    648,533.76x = 894,722.40 × 376,555.20
  4. Step 4: Simplify right side
    648,533.76x = 336,912,372,276.48
  5. Step 5: Solve for x
    x = 336,912,372,276.48/648,533.76
  6. Step 6: Final answer
    x = 519,498.59

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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.