Home / 1,281,212.80-1,920,206.40-650,300.80

Finding the Fourth Proportional to 1,281,212.80, 1,920,206.40 and 650,300.80

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Solution

The fourth proportional to 1,281,212.80, 1,920,206.40 and 650,300.80 is: 974,632.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281,212.80 : 1,920,206.40 = 650,300.80 : x
  2. Step 2: Convert to fraction form
    1,281,212.80/1,920,206.40 = 650,300.80/x
  3. Step 3: Cross multiply
    1,281,212.80x = 1,920,206.40 × 650,300.80
  4. Step 4: Simplify right side
    1,281,212.80x = 1,248,711,758,085.12
  5. Step 5: Solve for x
    x = 1,248,711,758,085.12/1,281,212.80
  6. Step 6: Final answer
    x = 974,632.60

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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.