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Finding the Fourth Proportional to 528,982.74, 730,123.20 and 302,759.46

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Solution

The fourth proportional to 528,982.74, 730,123.20 and 302,759.46 is: 417,880.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,982.74 : 730,123.20 = 302,759.46 : x
  2. Step 2: Convert to fraction form
    528,982.74/730,123.20 = 302,759.46/x
  3. Step 3: Cross multiply
    528,982.74x = 730,123.20 × 302,759.46
  4. Step 4: Simplify right side
    528,982.74x = 221,051,705,765.47
  5. Step 5: Solve for x
    x = 221,051,705,765.47/528,982.74
  6. Step 6: Final answer
    x = 417,880.75

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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.