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Finding the Fourth Proportional to 478,668.96, 660,802.32 and 370,997.28

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Solution

The fourth proportional to 478,668.96, 660,802.32 and 370,997.28 is: 512,161.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,668.96 : 660,802.32 = 370,997.28 : x
  2. Step 2: Convert to fraction form
    478,668.96/660,802.32 = 370,997.28/x
  3. Step 3: Cross multiply
    478,668.96x = 660,802.32 × 370,997.28
  4. Step 4: Simplify right side
    478,668.96x = 245,155,863,337.69
  5. Step 5: Solve for x
    x = 245,155,863,337.69/478,668.96
  6. Step 6: Final answer
    x = 512,161.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.