Home / 778,285,484,436.28-1,167,604,260,908.90-420,129,770,575

Finding the Fourth Proportional to 778,285,484,436.28, 1,167,604,260,908.90 and 420,129,770,575

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Solution

The fourth proportional to 778,285,484,436.28, 1,167,604,260,908.90 and 420,129,770,575 is: 630,289,681,701.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,285,484,436.28 : 1,167,604,260,908.90 = 420,129,770,575 : x
  2. Step 2: Convert to fraction form
    778,285,484,436.28/1,167,604,260,908.90 = 420,129,770,575/x
  3. Step 3: Cross multiply
    778,285,484,436.28x = 1,167,604,260,908.90 × 420,129,770,575
  4. Step 4: Simplify right side
    778,285,484,436.28x = 490,545,310,258,048,572,325,888
  5. Step 5: Solve for x
    x = 490,545,310,258,048,572,325,888/778,285,484,436.28
  6. Step 6: Final answer
    x = 630,289,681,701.25

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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.