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Finding the Fourth Proportional to 553,210.20, 829,815.30 and 488,256.30

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Solution

The fourth proportional to 553,210.20, 829,815.30 and 488,256.30 is: 732,384.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,210.20 : 829,815.30 = 488,256.30 : x
  2. Step 2: Convert to fraction form
    553,210.20/829,815.30 = 488,256.30/x
  3. Step 3: Cross multiply
    553,210.20x = 829,815.30 × 488,256.30
  4. Step 4: Simplify right side
    553,210.20x = 405,162,548,061.39
  5. Step 5: Solve for x
    x = 405,162,548,061.39/553,210.20
  6. Step 6: Final answer
    x = 732,384.45

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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.