Home / 478,987,400.05-718,478,085.17-257,762,946.86

Finding the Fourth Proportional to 478,987,400.05, 718,478,085.17 and 257,762,946.86

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Solution

The fourth proportional to 478,987,400.05, 718,478,085.17 and 257,762,946.86 is: 386,642,797.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,987,400.05 : 718,478,085.17 = 257,762,946.86 : x
  2. Step 2: Convert to fraction form
    478,987,400.05/718,478,085.17 = 257,762,946.86/x
  3. Step 3: Cross multiply
    478,987,400.05x = 718,478,085.17 × 257,762,946.86
  4. Step 4: Simplify right side
    478,987,400.05x = 185,197,028,487,427,072
  5. Step 5: Solve for x
    x = 185,197,028,487,427,072/478,987,400.05
  6. Step 6: Final answer
    x = 386,642,797.85

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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.