Home / 1,272,320.61-1,908,479.70-325,689.81

Finding the Fourth Proportional to 1,272,320.61, 1,908,479.70 and 325,689.81

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Solution

The fourth proportional to 1,272,320.61, 1,908,479.70 and 325,689.81 is: 488,534.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,320.61 : 1,908,479.70 = 325,689.81 : x
  2. Step 2: Convert to fraction form
    1,272,320.61/1,908,479.70 = 325,689.81/x
  3. Step 3: Cross multiply
    1,272,320.61x = 1,908,479.70 × 325,689.81
  4. Step 4: Simplify right side
    1,272,320.61x = 621,572,379,711.01
  5. Step 5: Solve for x
    x = 621,572,379,711.01/1,272,320.61
  6. Step 6: Final answer
    x = 488,534.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.