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Finding the Fourth Proportional to 977,678,583.48, 1,349,155,375.61 and 554,320,725.48

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Solution

The fourth proportional to 977,678,583.48, 1,349,155,375.61 and 554,320,725.48 is: 764,939,315.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,678,583.48 : 1,349,155,375.61 = 554,320,725.48 : x
  2. Step 2: Convert to fraction form
    977,678,583.48/1,349,155,375.61 = 554,320,725.48/x
  3. Step 3: Cross multiply
    977,678,583.48x = 1,349,155,375.61 × 554,320,725.48
  4. Step 4: Simplify right side
    977,678,583.48x = 747,864,786,590,605,568
  5. Step 5: Solve for x
    x = 747,864,786,590,605,568/977,678,583.48
  6. Step 6: Final answer
    x = 764,939,315.67

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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.