Home / 727,715.20-1,091,572.80-328,547.20

Finding the Fourth Proportional to 727,715.20, 1,091,572.80 and 328,547.20

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Solution

The fourth proportional to 727,715.20, 1,091,572.80 and 328,547.20 is: 492,820.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,715.20 : 1,091,572.80 = 328,547.20 : x
  2. Step 2: Convert to fraction form
    727,715.20/1,091,572.80 = 328,547.20/x
  3. Step 3: Cross multiply
    727,715.20x = 1,091,572.80 × 328,547.20
  4. Step 4: Simplify right side
    727,715.20x = 358,633,187,036.16
  5. Step 5: Solve for x
    x = 358,633,187,036.16/727,715.20
  6. Step 6: Final answer
    x = 492,820.80

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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.