Home / 778,285,484,435.28-1,167,604,260,907.40-420,129,770,574

Finding the Fourth Proportional to 778,285,484,435.28, 1,167,604,260,907.40 and 420,129,770,574

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Solution

The fourth proportional to 778,285,484,435.28, 1,167,604,260,907.40 and 420,129,770,574 is: 630,289,681,699.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,285,484,435.28 : 1,167,604,260,907.40 = 420,129,770,574 : x
  2. Step 2: Convert to fraction form
    778,285,484,435.28/1,167,604,260,907.40 = 420,129,770,574/x
  3. Step 3: Cross multiply
    778,285,484,435.28x = 1,167,604,260,907.40 × 420,129,770,574
  4. Step 4: Simplify right side
    778,285,484,435.28x = 490,545,310,256,250,725,859,328
  5. Step 5: Solve for x
    x = 490,545,310,256,250,725,859,328/778,285,484,435.28
  6. Step 6: Final answer
    x = 630,289,681,699.75

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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.