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Finding the Fourth Proportional to 478,477.26, 660,573.53 and 317,550.51

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Solution

The fourth proportional to 478,477.26, 660,573.53 and 317,550.51 is: 438,402.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,477.26 : 660,573.53 = 317,550.51 : x
  2. Step 2: Convert to fraction form
    478,477.26/660,573.53 = 317,550.51/x
  3. Step 3: Cross multiply
    478,477.26x = 660,573.53 × 317,550.51
  4. Step 4: Simplify right side
    478,477.26x = 209,765,459,756.25
  5. Step 5: Solve for x
    x = 209,765,459,756.25/478,477.26
  6. Step 6: Final answer
    x = 438,402.15

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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.