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Finding the Fourth Proportional to 710,272.52, 980,133.54 and 387,918.44

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Solution

The fourth proportional to 710,272.52, 980,133.54 and 387,918.44 is: 535,304.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,272.52 : 980,133.54 = 387,918.44 : x
  2. Step 2: Convert to fraction form
    710,272.52/980,133.54 = 387,918.44/x
  3. Step 3: Cross multiply
    710,272.52x = 980,133.54 × 387,918.44
  4. Step 4: Simplify right side
    710,272.52x = 380,211,873,828.48
  5. Step 5: Solve for x
    x = 380,211,873,828.48/710,272.52
  6. Step 6: Final answer
    x = 535,304.22

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Double scale
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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.