Home / 497,210.39-686,154.88-300,981.39

Finding the Fourth Proportional to 497,210.39, 686,154.88 and 300,981.39

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Solution

The fourth proportional to 497,210.39, 686,154.88 and 300,981.39 is: 415,357.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,210.39 : 686,154.88 = 300,981.39 : x
  2. Step 2: Convert to fraction form
    497,210.39/686,154.88 = 300,981.39/x
  3. Step 3: Cross multiply
    497,210.39x = 686,154.88 × 300,981.39
  4. Step 4: Simplify right side
    497,210.39x = 206,519,849,537.68
  5. Step 5: Solve for x
    x = 206,519,849,537.68/497,210.39
  6. Step 6: Final answer
    x = 415,357.07

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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.