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Finding the Fourth Proportional to 710,283.50, 980,175.11 and 387,995.03

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Solution

The fourth proportional to 710,283.50, 980,175.11 and 387,995.03 is: 535,424.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,283.50 : 980,175.11 = 387,995.03 : x
  2. Step 2: Convert to fraction form
    710,283.50/980,175.11 = 387,995.03/x
  3. Step 3: Cross multiply
    710,283.50x = 980,175.11 × 387,995.03
  4. Step 4: Simplify right side
    710,283.50x = 380,303,066,308.83
  5. Step 5: Solve for x
    x = 380,303,066,308.83/710,283.50
  6. Step 6: Final answer
    x = 535,424.33

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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.