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Finding the Fourth Proportional to 710,208.22, 980,081.52 and 387,918.52

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Solution

The fourth proportional to 710,208.22, 980,081.52 and 387,918.52 is: 535,324.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,208.22 : 980,081.52 = 387,918.52 : x
  2. Step 2: Convert to fraction form
    710,208.22/980,081.52 = 387,918.52/x
  3. Step 3: Cross multiply
    710,208.22x = 980,081.52 × 387,918.52
  4. Step 4: Simplify right side
    710,208.22x = 380,191,772,717.75
  5. Step 5: Solve for x
    x = 380,191,772,717.75/710,208.22
  6. Step 6: Final answer
    x = 535,324.38

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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.