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Finding the Fourth Proportional to 630,965.80, 946,448.70 and 567,980.20

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Solution

The fourth proportional to 630,965.80, 946,448.70 and 567,980.20 is: 851,970.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,965.80 : 946,448.70 = 567,980.20 : x
  2. Step 2: Convert to fraction form
    630,965.80/946,448.70 = 567,980.20/x
  3. Step 3: Cross multiply
    630,965.80x = 946,448.70 × 567,980.20
  4. Step 4: Simplify right side
    630,965.80x = 537,564,121,915.74
  5. Step 5: Solve for x
    x = 537,564,121,915.74/630,965.80
  6. Step 6: Final answer
    x = 851,970.30

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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.