Home / 945,123.60-1,304,246.88-515,412

Finding the Fourth Proportional to 945,123.60, 1,304,246.88 and 515,412

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Solution

The fourth proportional to 945,123.60, 1,304,246.88 and 515,412 is: 711,255.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    945,123.60 : 1,304,246.88 = 515,412 : x
  2. Step 2: Convert to fraction form
    945,123.60/1,304,246.88 = 515,412/x
  3. Step 3: Cross multiply
    945,123.60x = 1,304,246.88 × 515,412
  4. Step 4: Simplify right side
    945,123.60x = 672,224,492,914.56
  5. Step 5: Solve for x
    x = 672,224,492,914.56/945,123.60
  6. Step 6: Final answer
    x = 711,255.64

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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.