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Finding the Fourth Proportional to 1,235,264.80, 1,849,786.80 and 812,250.40

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Solution

The fourth proportional to 1,235,264.80, 1,849,786.80 and 812,250.40 is: 1,216,330.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,235,264.80 : 1,849,786.80 = 812,250.40 : x
  2. Step 2: Convert to fraction form
    1,235,264.80/1,849,786.80 = 812,250.40/x
  3. Step 3: Cross multiply
    1,235,264.80x = 1,849,786.80 × 812,250.40
  4. Step 4: Simplify right side
    1,235,264.80x = 1,502,490,068,214.72
  5. Step 5: Solve for x
    x = 1,502,490,068,214.72/1,235,264.80
  6. Step 6: Final answer
    x = 1,216,330.35

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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.