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Finding the Fourth Proportional to 553,611.70, 830,417.55 and 483,627.70

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Solution

The fourth proportional to 553,611.70, 830,417.55 and 483,627.70 is: 725,441.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,611.70 : 830,417.55 = 483,627.70 : x
  2. Step 2: Convert to fraction form
    553,611.70/830,417.55 = 483,627.70/x
  3. Step 3: Cross multiply
    553,611.70x = 830,417.55 × 483,627.70
  4. Step 4: Simplify right side
    553,611.70x = 401,612,929,746.14
  5. Step 5: Solve for x
    x = 401,612,929,746.14/553,611.70
  6. Step 6: Final answer
    x = 725,441.55

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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.