Home / 513,875,698.32-770,843,264.70-145,379,782.29

Finding the Fourth Proportional to 513,875,698.32, 770,843,264.70 and 145,379,782.29

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Solution

The fourth proportional to 513,875,698.32, 770,843,264.70 and 145,379,782.29 is: 218,078,080.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,875,698.32 : 770,843,264.70 = 145,379,782.29 : x
  2. Step 2: Convert to fraction form
    513,875,698.32/770,843,264.70 = 145,379,782.29/x
  3. Step 3: Cross multiply
    513,875,698.32x = 770,843,264.70 × 145,379,782.29
  4. Step 4: Simplify right side
    513,875,698.32x = 112,065,026,001,798,848
  5. Step 5: Solve for x
    x = 112,065,026,001,798,848/513,875,698.32
  6. Step 6: Final answer
    x = 218,078,080.69

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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.