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Finding the Fourth Proportional to 706,528.31, 974,988.18 and 400,632.62

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Solution

The fourth proportional to 706,528.31, 974,988.18 and 400,632.62 is: 552,861.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,528.31 : 974,988.18 = 400,632.62 : x
  2. Step 2: Convert to fraction form
    706,528.31/974,988.18 = 400,632.62/x
  3. Step 3: Cross multiply
    706,528.31x = 974,988.18 × 400,632.62
  4. Step 4: Simplify right side
    706,528.31x = 390,612,064,147.49
  5. Step 5: Solve for x
    x = 390,612,064,147.49/706,528.31
  6. Step 6: Final answer
    x = 552,861.17

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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.