Home / 28,513,687.20-42,770,530.80-8,320,970.40

Finding the Fourth Proportional to 28,513,687.20, 42,770,530.80 and 8,320,970.40

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Solution

The fourth proportional to 28,513,687.20, 42,770,530.80 and 8,320,970.40 is: 12,481,455.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,513,687.20 : 42,770,530.80 = 8,320,970.40 : x
  2. Step 2: Convert to fraction form
    28,513,687.20/42,770,530.80 = 8,320,970.40/x
  3. Step 3: Cross multiply
    28,513,687.20x = 42,770,530.80 × 8,320,970.40
  4. Step 4: Simplify right side
    28,513,687.20x = 355,892,320,779,088.31
  5. Step 5: Solve for x
    x = 355,892,320,779,088.31/28,513,687.20
  6. Step 6: Final answer
    x = 12,481,455.60

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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.