Home / 711,997.81-982,555.35-389,705.10

Finding the Fourth Proportional to 711,997.81, 982,555.35 and 389,705.10

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Solution

The fourth proportional to 711,997.81, 982,555.35 and 389,705.10 is: 537,792.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,997.81 : 982,555.35 = 389,705.10 : x
  2. Step 2: Convert to fraction form
    711,997.81/982,555.35 = 389,705.10/x
  3. Step 3: Cross multiply
    711,997.81x = 982,555.35 × 389,705.10
  4. Step 4: Simplify right side
    711,997.81x = 382,906,830,927.29
  5. Step 5: Solve for x
    x = 382,906,830,927.29/711,997.81
  6. Step 6: Final answer
    x = 537,792.15

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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.