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Finding the Fourth Proportional to 478,670.51, 660,556.76 and 260,881.16

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Solution

The fourth proportional to 478,670.51, 660,556.76 and 260,881.16 is: 360,011.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,670.51 : 660,556.76 = 260,881.16 : x
  2. Step 2: Convert to fraction form
    478,670.51/660,556.76 = 260,881.16/x
  3. Step 3: Cross multiply
    478,670.51x = 660,556.76 × 260,881.16
  4. Step 4: Simplify right side
    478,670.51x = 172,326,809,187.45
  5. Step 5: Solve for x
    x = 172,326,809,187.45/478,670.51
  6. Step 6: Final answer
    x = 360,011.33

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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.