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Finding the Fourth Proportional to 630,710.40, 946,065.60 and 579,100.80

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Solution

The fourth proportional to 630,710.40, 946,065.60 and 579,100.80 is: 868,651.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,710.40 : 946,065.60 = 579,100.80 : x
  2. Step 2: Convert to fraction form
    630,710.40/946,065.60 = 579,100.80/x
  3. Step 3: Cross multiply
    630,710.40x = 946,065.60 × 579,100.80
  4. Step 4: Simplify right side
    630,710.40x = 547,867,345,812.48
  5. Step 5: Solve for x
    x = 547,867,345,812.48/630,710.40
  6. Step 6: Final answer
    x = 868,651.20

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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.