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Finding the Fourth Proportional to 563,334,562.80, 843,868,103.40 and 391,005,961.20

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Solution

The fourth proportional to 563,334,562.80, 843,868,103.40 and 391,005,961.20 is: 585,722,021.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,334,562.80 : 843,868,103.40 = 391,005,961.20 : x
  2. Step 2: Convert to fraction form
    563,334,562.80/843,868,103.40 = 391,005,961.20/x
  3. Step 3: Cross multiply
    563,334,562.80x = 843,868,103.40 × 391,005,961.20
  4. Step 4: Simplify right side
    563,334,562.80x = 329,957,458,895,937,984
  5. Step 5: Solve for x
    x = 329,957,458,895,937,984/563,334,562.80
  6. Step 6: Final answer
    x = 585,722,021.49

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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.