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Finding the Fourth Proportional to 647,574.70, 971,362.05 and 579,340.30

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Solution

The fourth proportional to 647,574.70, 971,362.05 and 579,340.30 is: 869,010.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,574.70 : 971,362.05 = 579,340.30 : x
  2. Step 2: Convert to fraction form
    647,574.70/971,362.05 = 579,340.30/x
  3. Step 3: Cross multiply
    647,574.70x = 971,362.05 × 579,340.30
  4. Step 4: Simplify right side
    647,574.70x = 562,749,181,455.62
  5. Step 5: Solve for x
    x = 562,749,181,455.62/647,574.70
  6. Step 6: Final answer
    x = 869,010.45

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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.