Home / 513,208,015.20-768,111,411.60-472,393,346.40

Finding the Fourth Proportional to 513,208,015.20, 768,111,411.60 and 472,393,346.40

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Solution

The fourth proportional to 513,208,015.20, 768,111,411.60 and 472,393,346.40 is: 707,024,655.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,208,015.20 : 768,111,411.60 = 472,393,346.40 : x
  2. Step 2: Convert to fraction form
    513,208,015.20/768,111,411.60 = 472,393,346.40/x
  3. Step 3: Cross multiply
    513,208,015.20x = 768,111,411.60 × 472,393,346.40
  4. Step 4: Simplify right side
    513,208,015.20x = 362,850,720,133,751,744
  5. Step 5: Solve for x
    x = 362,850,720,133,751,744/513,208,015.20
  6. Step 6: Final answer
    x = 707,024,655.47

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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.