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Finding the Fourth Proportional to 553,631.70, 830,447.55 and 473,915.55

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Solution

The fourth proportional to 553,631.70, 830,447.55 and 473,915.55 is: 710,873.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,631.70 : 830,447.55 = 473,915.55 : x
  2. Step 2: Convert to fraction form
    553,631.70/830,447.55 = 473,915.55/x
  3. Step 3: Cross multiply
    553,631.70x = 830,447.55 × 473,915.55
  4. Step 4: Simplify right side
    553,631.70x = 393,562,007,404.40
  5. Step 5: Solve for x
    x = 393,562,007,404.40/553,631.70
  6. Step 6: Final answer
    x = 710,873.33

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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.