Home / 778,285,484,281.72-1,167,604,260,677-420,129,770,420.40

Finding the Fourth Proportional to 778,285,484,281.72, 1,167,604,260,677 and 420,129,770,420.40

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Solution

The fourth proportional to 778,285,484,281.72, 1,167,604,260,677 and 420,129,770,420.40 is: 630,289,681,469.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,285,484,281.72 : 1,167,604,260,677 = 420,129,770,420.40 : x
  2. Step 2: Convert to fraction form
    778,285,484,281.72/1,167,604,260,677 = 420,129,770,420.40/x
  3. Step 3: Cross multiply
    778,285,484,281.72x = 1,167,604,260,677 × 420,129,770,420.40
  4. Step 4: Simplify right side
    778,285,484,281.72x = 490,545,309,980,108,890,570,752
  5. Step 5: Solve for x
    x = 490,545,309,980,108,890,570,752/778,285,484,281.72
  6. Step 6: Final answer
    x = 630,289,681,469.31

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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.