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Finding the Fourth Proportional to 571,999.95, 789,429.96 and 330,281.91

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Solution

The fourth proportional to 571,999.95, 789,429.96 and 330,281.91 is: 455,829.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,999.95 : 789,429.96 = 330,281.91 : x
  2. Step 2: Convert to fraction form
    571,999.95/789,429.96 = 330,281.91/x
  3. Step 3: Cross multiply
    571,999.95x = 789,429.96 × 330,281.91
  4. Step 4: Simplify right side
    571,999.95x = 260,734,435,000.02
  5. Step 5: Solve for x
    x = 260,734,435,000.02/571,999.95
  6. Step 6: Final answer
    x = 455,829.47

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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.