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Finding the Fourth Proportional to 530,550, 730,537.56 and 399,917.46

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Solution

The fourth proportional to 530,550, 730,537.56 and 399,917.46 is: 550,663.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,550 : 730,537.56 = 399,917.46 : x
  2. Step 2: Convert to fraction form
    530,550/730,537.56 = 399,917.46/x
  3. Step 3: Cross multiply
    530,550x = 730,537.56 × 399,917.46
  4. Step 4: Simplify right side
    530,550x = 292,154,725,429.80
  5. Step 5: Solve for x
    x = 292,154,725,429.80/530,550
  6. Step 6: Final answer
    x = 550,663.89

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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.