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Finding the Fourth Proportional to 571,001.39, 788,007.72 and 316,352.60

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Solution

The fourth proportional to 571,001.39, 788,007.72 and 316,352.60 is: 436,580.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,001.39 : 788,007.72 = 316,352.60 : x
  2. Step 2: Convert to fraction form
    571,001.39/788,007.72 = 316,352.60/x
  3. Step 3: Cross multiply
    571,001.39x = 788,007.72 × 316,352.60
  4. Step 4: Simplify right side
    571,001.39x = 249,288,291,042.07
  5. Step 5: Solve for x
    x = 249,288,291,042.07/571,001.39
  6. Step 6: Final answer
    x = 436,580.88

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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.