Home / 420,261,637.60-630,392,456.40-147,632,404.60

Finding the Fourth Proportional to 420,261,637.60, 630,392,456.40 and 147,632,404.60

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Solution

The fourth proportional to 420,261,637.60, 630,392,456.40 and 147,632,404.60 is: 221,448,606.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,261,637.60 : 630,392,456.40 = 147,632,404.60 : x
  2. Step 2: Convert to fraction form
    420,261,637.60/630,392,456.40 = 147,632,404.60/x
  3. Step 3: Cross multiply
    420,261,637.60x = 630,392,456.40 × 147,632,404.60
  4. Step 4: Simplify right side
    420,261,637.60x = 93,066,354,180,032,656
  5. Step 5: Solve for x
    x = 93,066,354,180,032,656/420,261,637.60
  6. Step 6: Final answer
    x = 221,448,606.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.