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Finding the Fourth Proportional to 571,298.08, 788,379.60 and 316,647.04

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Solution

The fourth proportional to 571,298.08, 788,379.60 and 316,647.04 is: 436,966.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,298.08 : 788,379.60 = 316,647.04 : x
  2. Step 2: Convert to fraction form
    571,298.08/788,379.60 = 316,647.04/x
  3. Step 3: Cross multiply
    571,298.08x = 788,379.60 × 316,647.04
  4. Step 4: Simplify right side
    571,298.08x = 249,638,066,736.38
  5. Step 5: Solve for x
    x = 249,638,066,736.38/571,298.08
  6. Step 6: Final answer
    x = 436,966.40

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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.