Home / 8,385,904.71-11,572,175.84-5,128,178.67

Finding the Fourth Proportional to 8,385,904.71, 11,572,175.84 and 5,128,178.67

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Solution

The fourth proportional to 8,385,904.71, 11,572,175.84 and 5,128,178.67 is: 7,076,658.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,385,904.71 : 11,572,175.84 = 5,128,178.67 : x
  2. Step 2: Convert to fraction form
    8,385,904.71/11,572,175.84 = 5,128,178.67/x
  3. Step 3: Cross multiply
    8,385,904.71x = 11,572,175.84 × 5,128,178.67
  4. Step 4: Simplify right side
    8,385,904.71x = 59,344,185,282,536.45
  5. Step 5: Solve for x
    x = 59,344,185,282,536.45/8,385,904.71
  6. Step 6: Final answer
    x = 7,076,658.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.