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Finding the Fourth Proportional to 571,447.59, 788,616.86 and 316,783.59

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Solution

The fourth proportional to 571,447.59, 788,616.86 and 316,783.59 is: 437,171.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,447.59 : 788,616.86 = 316,783.59 : x
  2. Step 2: Convert to fraction form
    571,447.59/788,616.86 = 316,783.59/x
  3. Step 3: Cross multiply
    571,447.59x = 788,616.86 × 316,783.59
  4. Step 4: Simplify right side
    571,447.59x = 249,820,878,461.41
  5. Step 5: Solve for x
    x = 249,820,878,461.41/571,447.59
  6. Step 6: Final answer
    x = 437,171.99

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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.