Home / 726,631,749.80-1,089,947,624.70-640,538,307.80

Finding the Fourth Proportional to 726,631,749.80, 1,089,947,624.70 and 640,538,307.80

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Solution

The fourth proportional to 726,631,749.80, 1,089,947,624.70 and 640,538,307.80 is: 960,807,461.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,631,749.80 : 1,089,947,624.70 = 640,538,307.80 : x
  2. Step 2: Convert to fraction form
    726,631,749.80/1,089,947,624.70 = 640,538,307.80/x
  3. Step 3: Cross multiply
    726,631,749.80x = 1,089,947,624.70 × 640,538,307.80
  4. Step 4: Simplify right side
    726,631,749.80x = 698,153,207,115,967,488
  5. Step 5: Solve for x
    x = 698,153,207,115,967,488/726,631,749.80
  6. Step 6: Final answer
    x = 960,807,461.70

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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.