Home / 1,553,276.80-2,329,915.20-431,345.80

Finding the Fourth Proportional to 1,553,276.80, 2,329,915.20 and 431,345.80

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Solution

The fourth proportional to 1,553,276.80, 2,329,915.20 and 431,345.80 is: 647,018.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,553,276.80 : 2,329,915.20 = 431,345.80 : x
  2. Step 2: Convert to fraction form
    1,553,276.80/2,329,915.20 = 431,345.80/x
  3. Step 3: Cross multiply
    1,553,276.80x = 2,329,915.20 × 431,345.80
  4. Step 4: Simplify right side
    1,553,276.80x = 1,004,999,135,876.16
  5. Step 5: Solve for x
    x = 1,004,999,135,876.16/1,553,276.80
  6. Step 6: Final answer
    x = 647,018.70

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Double scale
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Similar ratio
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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.