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Finding the Fourth Proportional to 571,646.68, 788,903.96 and 316,992.40

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Solution

The fourth proportional to 571,646.68, 788,903.96 and 316,992.40 is: 437,467.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,646.68 : 788,903.96 = 316,992.40 : x
  2. Step 2: Convert to fraction form
    571,646.68/788,903.96 = 316,992.40/x
  3. Step 3: Cross multiply
    571,646.68x = 788,903.96 × 316,992.40
  4. Step 4: Simplify right side
    571,646.68x = 250,076,559,649.90
  5. Step 5: Solve for x
    x = 250,076,559,649.90/571,646.68
  6. Step 6: Final answer
    x = 437,467.00

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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.