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Finding the Fourth Proportional to 570,163,659.44, 786,825,851.64 and 309,403,275.44

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Solution

The fourth proportional to 570,163,659.44, 786,825,851.64 and 309,403,275.44 is: 426,976,520.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,163,659.44 : 786,825,851.64 = 309,403,275.44 : x
  2. Step 2: Convert to fraction form
    570,163,659.44/786,825,851.64 = 309,403,275.44/x
  3. Step 3: Cross multiply
    570,163,659.44x = 786,825,851.64 × 309,403,275.44
  4. Step 4: Simplify right side
    570,163,659.44x = 243,446,495,698,283,488
  5. Step 5: Solve for x
    x = 243,446,495,698,283,488/570,163,659.44
  6. Step 6: Final answer
    x = 426,976,520.98

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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.