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Finding the Fourth Proportional to 434,562.30, 651,843.45 and 420,047.10

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Solution

The fourth proportional to 434,562.30, 651,843.45 and 420,047.10 is: 630,070.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,562.30 : 651,843.45 = 420,047.10 : x
  2. Step 2: Convert to fraction form
    434,562.30/651,843.45 = 420,047.10/x
  3. Step 3: Cross multiply
    434,562.30x = 651,843.45 × 420,047.10
  4. Step 4: Simplify right side
    434,562.30x = 273,804,950,826.50
  5. Step 5: Solve for x
    x = 273,804,950,826.50/434,562.30
  6. Step 6: Final answer
    x = 630,070.65

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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.