Home / 905,666.07-1,249,821.91-497,809.71

Finding the Fourth Proportional to 905,666.07, 1,249,821.91 and 497,809.71

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Solution

The fourth proportional to 905,666.07, 1,249,821.91 and 497,809.71 is: 686,978.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,666.07 : 1,249,821.91 = 497,809.71 : x
  2. Step 2: Convert to fraction form
    905,666.07/1,249,821.91 = 497,809.71/x
  3. Step 3: Cross multiply
    905,666.07x = 1,249,821.91 × 497,809.71
  4. Step 4: Simplify right side
    905,666.07x = 622,173,482,568.75
  5. Step 5: Solve for x
    x = 622,173,482,568.75/905,666.07
  6. Step 6: Final answer
    x = 686,978.90

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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.