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Finding the Fourth Proportional to 706,428.21, 974,841.29 and 400,525.17

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Solution

The fourth proportional to 706,428.21, 974,841.29 and 400,525.17 is: 552,707.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,428.21 : 974,841.29 = 400,525.17 : x
  2. Step 2: Convert to fraction form
    706,428.21/974,841.29 = 400,525.17/x
  3. Step 3: Cross multiply
    706,428.21x = 974,841.29 × 400,525.17
  4. Step 4: Simplify right side
    706,428.21x = 390,448,471,397.64
  5. Step 5: Solve for x
    x = 390,448,471,397.64/706,428.21
  6. Step 6: Final answer
    x = 552,707.93

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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.