Home / 931,931,392.40-1,399,912,627.80-659,833,600.40

Finding the Fourth Proportional to 931,931,392.40, 1,399,912,627.80 and 659,833,600.40

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Solution

The fourth proportional to 931,931,392.40, 1,399,912,627.80 and 659,833,600.40 is: 991,177,458.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,931,392.40 : 1,399,912,627.80 = 659,833,600.40 : x
  2. Step 2: Convert to fraction form
    931,931,392.40/1,399,912,627.80 = 659,833,600.40/x
  3. Step 3: Cross multiply
    931,931,392.40x = 1,399,912,627.80 × 659,833,600.40
  4. Step 4: Simplify right side
    931,931,392.40x = 923,709,389,446,699,008
  5. Step 5: Solve for x
    x = 923,709,389,446,699,008/931,931,392.40
  6. Step 6: Final answer
    x = 991,177,458.96

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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.