Home / 645,460.48-890,682.54-373,548.28

Finding the Fourth Proportional to 645,460.48, 890,682.54 and 373,548.28

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Solution

The fourth proportional to 645,460.48, 890,682.54 and 373,548.28 is: 515,466.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,460.48 : 890,682.54 = 373,548.28 : x
  2. Step 2: Convert to fraction form
    645,460.48/890,682.54 = 373,548.28/x
  3. Step 3: Cross multiply
    645,460.48x = 890,682.54 × 373,548.28
  4. Step 4: Simplify right side
    645,460.48x = 332,712,930,843.03
  5. Step 5: Solve for x
    x = 332,712,930,843.03/645,460.48
  6. Step 6: Final answer
    x = 515,466.00

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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.