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Finding the Fourth Proportional to 571,164.84, 788,187.46 and 316,539.72

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Solution

The fourth proportional to 571,164.84, 788,187.46 and 316,539.72 is: 436,813.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,164.84 : 788,187.46 = 316,539.72 : x
  2. Step 2: Convert to fraction form
    571,164.84/788,187.46 = 316,539.72/x
  3. Step 3: Cross multiply
    571,164.84x = 788,187.46 × 316,539.72
  4. Step 4: Simplify right side
    571,164.84x = 249,492,637,895.91
  5. Step 5: Solve for x
    x = 249,492,637,895.91/571,164.84
  6. Step 6: Final answer
    x = 436,813.72

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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.