Home / 7,177,489.60-10,772,109.60-7,121,502.40

Finding the Fourth Proportional to 7,177,489.60, 10,772,109.60 and 7,121,502.40

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Solution

The fourth proportional to 7,177,489.60, 10,772,109.60 and 7,121,502.40 is: 10,688,082.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,177,489.60 : 10,772,109.60 = 7,121,502.40 : x
  2. Step 2: Convert to fraction form
    7,177,489.60/10,772,109.60 = 7,121,502.40/x
  3. Step 3: Cross multiply
    7,177,489.60x = 10,772,109.60 × 7,121,502.40
  4. Step 4: Simplify right side
    7,177,489.60x = 76,713,604,369,463.05
  5. Step 5: Solve for x
    x = 76,713,604,369,463.05/7,177,489.60
  6. Step 6: Final answer
    x = 10,688,082.97

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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.