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Finding the Fourth Proportional to 571,055.52, 788,001.84 and 316,401.60

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Solution

The fourth proportional to 571,055.52, 788,001.84 and 316,401.60 is: 436,603.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,055.52 : 788,001.84 = 316,401.60 : x
  2. Step 2: Convert to fraction form
    571,055.52/788,001.84 = 316,401.60/x
  3. Step 3: Cross multiply
    571,055.52x = 788,001.84 × 316,401.60
  4. Step 4: Simplify right side
    571,055.52x = 249,325,042,978.94
  5. Step 5: Solve for x
    x = 249,325,042,978.94/571,055.52
  6. Step 6: Final answer
    x = 436,603.86

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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.