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Finding the Fourth Proportional to 571,089.88, 788,108.70 and 316,445.32

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Solution

The fourth proportional to 571,089.88, 788,108.70 and 316,445.32 is: 436,697.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,089.88 : 788,108.70 = 316,445.32 : x
  2. Step 2: Convert to fraction form
    571,089.88/788,108.70 = 316,445.32/x
  3. Step 3: Cross multiply
    571,089.88x = 788,108.70 × 316,445.32
  4. Step 4: Simplify right side
    571,089.88x = 249,393,309,766.28
  5. Step 5: Solve for x
    x = 249,393,309,766.28/571,089.88
  6. Step 6: Final answer
    x = 436,697.13

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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.