Home / 726,768,000.80-1,090,152,001.20-420,657,984.80

Finding the Fourth Proportional to 726,768,000.80, 1,090,152,001.20 and 420,657,984.80

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Solution

The fourth proportional to 726,768,000.80, 1,090,152,001.20 and 420,657,984.80 is: 630,986,977.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,768,000.80 : 1,090,152,001.20 = 420,657,984.80 : x
  2. Step 2: Convert to fraction form
    726,768,000.80/1,090,152,001.20 = 420,657,984.80/x
  3. Step 3: Cross multiply
    726,768,000.80x = 1,090,152,001.20 × 420,657,984.80
  4. Step 4: Simplify right side
    726,768,000.80x = 458,581,143,950,479,232
  5. Step 5: Solve for x
    x = 458,581,143,950,479,232/726,768,000.80
  6. Step 6: Final answer
    x = 630,986,977.20

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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.