Home / 647,566.20-971,349.30-423,617.40

Finding the Fourth Proportional to 647,566.20, 971,349.30 and 423,617.40

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Solution

The fourth proportional to 647,566.20, 971,349.30 and 423,617.40 is: 635,426.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,566.20 : 971,349.30 = 423,617.40 : x
  2. Step 2: Convert to fraction form
    647,566.20/971,349.30 = 423,617.40/x
  3. Step 3: Cross multiply
    647,566.20x = 971,349.30 × 423,617.40
  4. Step 4: Simplify right side
    647,566.20x = 411,480,464,957.82
  5. Step 5: Solve for x
    x = 411,480,464,957.82/647,566.20
  6. Step 6: Final answer
    x = 635,426.10

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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.