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Finding the Fourth Proportional to 497,588.76, 686,646.58 and 282,699

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Solution

The fourth proportional to 497,588.76, 686,646.58 and 282,699 is: 390,109.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,588.76 : 686,646.58 = 282,699 : x
  2. Step 2: Convert to fraction form
    497,588.76/686,646.58 = 282,699/x
  3. Step 3: Cross multiply
    497,588.76x = 686,646.58 × 282,699
  4. Step 4: Simplify right side
    497,588.76x = 194,114,301,519.42
  5. Step 5: Solve for x
    x = 194,114,301,519.42/497,588.76
  6. Step 6: Final answer
    x = 390,109.90

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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.