Home / 905,730.65-1,249,921.13-497,870.19

Finding the Fourth Proportional to 905,730.65, 1,249,921.13 and 497,870.19

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Solution

The fourth proportional to 905,730.65, 1,249,921.13 and 497,870.19 is: 687,067.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,730.65 : 1,249,921.13 = 497,870.19 : x
  2. Step 2: Convert to fraction form
    905,730.65/1,249,921.13 = 497,870.19/x
  3. Step 3: Cross multiply
    905,730.65x = 1,249,921.13 × 497,870.19
  4. Step 4: Simplify right side
    905,730.65x = 622,298,467,988.76
  5. Step 5: Solve for x
    x = 622,298,467,988.76/905,730.65
  6. Step 6: Final answer
    x = 687,067.92

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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.