Home / 8,257,211.80-12,385,817.70-5,387,430.40

Finding the Fourth Proportional to 8,257,211.80, 12,385,817.70 and 5,387,430.40

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Solution

The fourth proportional to 8,257,211.80, 12,385,817.70 and 5,387,430.40 is: 8,081,145.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,257,211.80 : 12,385,817.70 = 5,387,430.40 : x
  2. Step 2: Convert to fraction form
    8,257,211.80/12,385,817.70 = 5,387,430.40/x
  3. Step 3: Cross multiply
    8,257,211.80x = 12,385,817.70 × 5,387,430.40
  4. Step 4: Simplify right side
    8,257,211.80x = 66,727,730,805,838.08
  5. Step 5: Solve for x
    x = 66,727,730,805,838.08/8,257,211.80
  6. Step 6: Final answer
    x = 8,081,145.60

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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.