Home / 420,249,910.49-630,620,509.56-303,550,190.81

Finding the Fourth Proportional to 420,249,910.49, 630,620,509.56 and 303,550,190.81

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Solution

The fourth proportional to 420,249,910.49, 630,620,509.56 and 303,550,190.81 is: 455,502,716.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,249,910.49 : 630,620,509.56 = 303,550,190.81 : x
  2. Step 2: Convert to fraction form
    420,249,910.49/630,620,509.56 = 303,550,190.81/x
  3. Step 3: Cross multiply
    420,249,910.49x = 630,620,509.56 × 303,550,190.81
  4. Step 4: Simplify right side
    420,249,910.49x = 191,424,976,002,484,320
  5. Step 5: Solve for x
    x = 191,424,976,002,484,320/420,249,910.49
  6. Step 6: Final answer
    x = 455,502,716.90

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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.