Home / 1,005,187,615.40-1,507,923,140.70-315,022,903.40

Finding the Fourth Proportional to 1,005,187,615.40, 1,507,923,140.70 and 315,022,903.40

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Solution

The fourth proportional to 1,005,187,615.40, 1,507,923,140.70 and 315,022,903.40 is: 472,578,768.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,005,187,615.40 : 1,507,923,140.70 = 315,022,903.40 : x
  2. Step 2: Convert to fraction form
    1,005,187,615.40/1,507,923,140.70 = 315,022,903.40/x
  3. Step 3: Cross multiply
    1,005,187,615.40x = 1,507,923,140.70 × 315,022,903.40
  4. Step 4: Simplify right side
    1,005,187,615.40x = 475,030,325,887,360,704
  5. Step 5: Solve for x
    x = 475,030,325,887,360,704/1,005,187,615.40
  6. Step 6: Final answer
    x = 472,578,768.99

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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.