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Finding the Fourth Proportional to 497,555.40, 686,642.64 and 282,682.68

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Solution

The fourth proportional to 497,555.40, 686,642.64 and 282,682.68 is: 390,111.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,555.40 : 686,642.64 = 282,682.68 : x
  2. Step 2: Convert to fraction form
    497,555.40/686,642.64 = 282,682.68/x
  3. Step 3: Cross multiply
    497,555.40x = 686,642.64 × 282,682.68
  4. Step 4: Simplify right side
    497,555.40x = 194,101,981,677.48
  5. Step 5: Solve for x
    x = 194,101,981,677.48/497,555.40
  6. Step 6: Final answer
    x = 390,111.30

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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.