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Finding the Fourth Proportional to 497,737.88, 686,878.44 and 282,872.40

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Solution

The fourth proportional to 497,737.88, 686,878.44 and 282,872.40 is: 390,364.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,737.88 : 686,878.44 = 282,872.40 : x
  2. Step 2: Convert to fraction form
    497,737.88/686,878.44 = 282,872.40/x
  3. Step 3: Cross multiply
    497,737.88x = 686,878.44 × 282,872.40
  4. Step 4: Simplify right side
    497,737.88x = 194,298,952,831.06
  5. Step 5: Solve for x
    x = 194,298,952,831.06/497,737.88
  6. Step 6: Final answer
    x = 390,364.01

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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.