Home / 711,938.36-982,280.35-405,903.17

Finding the Fourth Proportional to 711,938.36, 982,280.35 and 405,903.17

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Solution

The fourth proportional to 711,938.36, 982,280.35 and 405,903.17 is: 560,035.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,938.36 : 982,280.35 = 405,903.17 : x
  2. Step 2: Convert to fraction form
    711,938.36/982,280.35 = 405,903.17/x
  3. Step 3: Cross multiply
    711,938.36x = 982,280.35 × 405,903.17
  4. Step 4: Simplify right side
    711,938.36x = 398,710,707,893.71
  5. Step 5: Solve for x
    x = 398,710,707,893.71/711,938.36
  6. Step 6: Final answer
    x = 560,035.43

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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.