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Finding the Fourth Proportional to 704,968.40, 972,857.63 and 382,678.72

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Solution

The fourth proportional to 704,968.40, 972,857.63 and 382,678.72 is: 528,097.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,968.40 : 972,857.63 = 382,678.72 : x
  2. Step 2: Convert to fraction form
    704,968.40/972,857.63 = 382,678.72/x
  3. Step 3: Cross multiply
    704,968.40x = 972,857.63 × 382,678.72
  4. Step 4: Simplify right side
    704,968.40x = 372,291,909,072.11
  5. Step 5: Solve for x
    x = 372,291,909,072.11/704,968.40
  6. Step 6: Final answer
    x = 528,097.30

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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.