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Finding the Fourth Proportional to 617,920.10, 926,880.15 and 477,952.10

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Solution

The fourth proportional to 617,920.10, 926,880.15 and 477,952.10 is: 716,928.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,920.10 : 926,880.15 = 477,952.10 : x
  2. Step 2: Convert to fraction form
    617,920.10/926,880.15 = 477,952.10/x
  3. Step 3: Cross multiply
    617,920.10x = 926,880.15 × 477,952.10
  4. Step 4: Simplify right side
    617,920.10x = 443,004,314,140.82
  5. Step 5: Solve for x
    x = 443,004,314,140.82/617,920.10
  6. Step 6: Final answer
    x = 716,928.15

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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.