Home / 7,920,011.80-11,880,017.70-2,870,666.20

Finding the Fourth Proportional to 7,920,011.80, 11,880,017.70 and 2,870,666.20

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Solution

The fourth proportional to 7,920,011.80, 11,880,017.70 and 2,870,666.20 is: 4,305,999.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,920,011.80 : 11,880,017.70 = 2,870,666.20 : x
  2. Step 2: Convert to fraction form
    7,920,011.80/11,880,017.70 = 2,870,666.20/x
  3. Step 3: Cross multiply
    7,920,011.80x = 11,880,017.70 × 2,870,666.20
  4. Step 4: Simplify right side
    7,920,011.80x = 34,103,565,266,791.74
  5. Step 5: Solve for x
    x = 34,103,565,266,791.74/7,920,011.80
  6. Step 6: Final answer
    x = 4,305,999.30

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1.5x scale

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.