Home / 684,287,977.20-1,026,431,965.80-442,224,207.60

Finding the Fourth Proportional to 684,287,977.20, 1,026,431,965.80 and 442,224,207.60

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Solution

The fourth proportional to 684,287,977.20, 1,026,431,965.80 and 442,224,207.60 is: 663,336,311.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,287,977.20 : 1,026,431,965.80 = 442,224,207.60 : x
  2. Step 2: Convert to fraction form
    684,287,977.20/1,026,431,965.80 = 442,224,207.60/x
  3. Step 3: Cross multiply
    684,287,977.20x = 1,026,431,965.80 × 442,224,207.60
  4. Step 4: Simplify right side
    684,287,977.20x = 453,913,062,731,215,296
  5. Step 5: Solve for x
    x = 453,913,062,731,215,296/684,287,977.20
  6. Step 6: Final answer
    x = 663,336,311.40

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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.