Home / 820,425,292.72-1,132,005,912.16-485,731,624.12

Finding the Fourth Proportional to 820,425,292.72, 1,132,005,912.16 and 485,731,624.12

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Solution

The fourth proportional to 820,425,292.72, 1,132,005,912.16 and 485,731,624.12 is: 670,202,485.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,425,292.72 : 1,132,005,912.16 = 485,731,624.12 : x
  2. Step 2: Convert to fraction form
    820,425,292.72/1,132,005,912.16 = 485,731,624.12/x
  3. Step 3: Cross multiply
    820,425,292.72x = 1,132,005,912.16 × 485,731,624.12
  4. Step 4: Simplify right side
    820,425,292.72x = 549,851,070,226,918,912
  5. Step 5: Solve for x
    x = 549,851,070,226,918,912/820,425,292.72
  6. Step 6: Final answer
    x = 670,202,485.35

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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.