Home / 490,681,981.30-735,397,781.55-260,761,213.30

Finding the Fourth Proportional to 490,681,981.30, 735,397,781.55 and 260,761,213.30

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Solution

The fourth proportional to 490,681,981.30, 735,397,781.55 and 260,761,213.30 is: 390,809,577.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,681,981.30 : 735,397,781.55 = 260,761,213.30 : x
  2. Step 2: Convert to fraction form
    490,681,981.30/735,397,781.55 = 260,761,213.30/x
  3. Step 3: Cross multiply
    490,681,981.30x = 735,397,781.55 × 260,761,213.30
  4. Step 4: Simplify right side
    490,681,981.30x = 191,763,217,775,106,336
  5. Step 5: Solve for x
    x = 191,763,217,775,106,336/490,681,981.30
  6. Step 6: Final answer
    x = 390,809,577.45

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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.