Home / 478,987,400.24-718,478,085.45-257,762,947.05

Finding the Fourth Proportional to 478,987,400.24, 718,478,085.45 and 257,762,947.05

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Solution

The fourth proportional to 478,987,400.24, 718,478,085.45 and 257,762,947.05 is: 386,642,798.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,987,400.24 : 718,478,085.45 = 257,762,947.05 : x
  2. Step 2: Convert to fraction form
    478,987,400.24/718,478,085.45 = 257,762,947.05/x
  3. Step 3: Cross multiply
    478,987,400.24x = 718,478,085.45 × 257,762,947.05
  4. Step 4: Simplify right side
    478,987,400.24x = 185,197,028,694,637,568
  5. Step 5: Solve for x
    x = 185,197,028,694,637,568/478,987,400.24
  6. Step 6: Final answer
    x = 386,642,798.13

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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.