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Finding the Fourth Proportional to 612,970.40, 920,146.80 and 363,792.80

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Solution

The fourth proportional to 612,970.40, 920,146.80 and 363,792.80 is: 546,099.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,970.40 : 920,146.80 = 363,792.80 : x
  2. Step 2: Convert to fraction form
    612,970.40/920,146.80 = 363,792.80/x
  3. Step 3: Cross multiply
    612,970.40x = 920,146.80 × 363,792.80
  4. Step 4: Simplify right side
    612,970.40x = 334,742,780,783.04
  5. Step 5: Solve for x
    x = 334,742,780,783.04/612,970.40
  6. Step 6: Final answer
    x = 546,099.42

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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.