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Finding the Fourth Proportional to 617,512.20, 867,005.40 and 617,512.20

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Solution

The fourth proportional to 617,512.20, 867,005.40 and 617,512.20 is: 867,005.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,512.20 : 867,005.40 = 617,512.20 : x
  2. Step 2: Convert to fraction form
    617,512.20/867,005.40 = 617,512.20/x
  3. Step 3: Cross multiply
    617,512.20x = 867,005.40 × 617,512.20
  4. Step 4: Simplify right side
    617,512.20x = 535,386,411,965.88
  5. Step 5: Solve for x
    x = 535,386,411,965.88/617,512.20
  6. Step 6: Final answer
    x = 867,005.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.