Home / 1,235,320.80-1,849,870.80-812,306.40

Finding the Fourth Proportional to 1,235,320.80, 1,849,870.80 and 812,306.40

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Solution

The fourth proportional to 1,235,320.80, 1,849,870.80 and 812,306.40 is: 1,216,414.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,235,320.80 : 1,849,870.80 = 812,306.40 : x
  2. Step 2: Convert to fraction form
    1,235,320.80/1,849,870.80 = 812,306.40/x
  3. Step 3: Cross multiply
    1,235,320.80x = 1,849,870.80 × 812,306.40
  4. Step 4: Simplify right side
    1,235,320.80x = 1,502,661,890,013.12
  5. Step 5: Solve for x
    x = 1,502,661,890,013.12/1,235,320.80
  6. Step 6: Final answer
    x = 1,216,414.30

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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.