Home / 497,210.90-686,155.58-300,981.89

Finding the Fourth Proportional to 497,210.90, 686,155.58 and 300,981.89

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Solution

The fourth proportional to 497,210.90, 686,155.58 and 300,981.89 is: 415,357.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,210.90 : 686,155.58 = 300,981.89 : x
  2. Step 2: Convert to fraction form
    497,210.90/686,155.58 = 300,981.89/x
  3. Step 3: Cross multiply
    497,210.90x = 686,155.58 × 300,981.89
  4. Step 4: Simplify right side
    497,210.90x = 206,520,398,366.76
  5. Step 5: Solve for x
    x = 206,520,398,366.76/497,210.90
  6. Step 6: Final answer
    x = 415,357.75

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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.