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Finding the Fourth Proportional to 854,953.60, 1,280,680.80 and 434,466.40

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Solution

The fourth proportional to 854,953.60, 1,280,680.80 and 434,466.40 is: 650,810.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    854,953.60 : 1,280,680.80 = 434,466.40 : x
  2. Step 2: Convert to fraction form
    854,953.60/1,280,680.80 = 434,466.40/x
  3. Step 3: Cross multiply
    854,953.60x = 1,280,680.80 × 434,466.40
  4. Step 4: Simplify right side
    854,953.60x = 556,412,776,725.12
  5. Step 5: Solve for x
    x = 556,412,776,725.12/854,953.60
  6. Step 6: Final answer
    x = 650,810.50

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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.