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Finding the Fourth Proportional to 406,056.40, 607,772.40 and 316,826.80

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Solution

The fourth proportional to 406,056.40, 607,772.40 and 316,826.80 is: 474,216.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,056.40 : 607,772.40 = 316,826.80 : x
  2. Step 2: Convert to fraction form
    406,056.40/607,772.40 = 316,826.80/x
  3. Step 3: Cross multiply
    406,056.40x = 607,772.40 × 316,826.80
  4. Step 4: Simplify right side
    406,056.40x = 192,558,584,620.32
  5. Step 5: Solve for x
    x = 192,558,584,620.32/406,056.40
  6. Step 6: Final answer
    x = 474,216.35

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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.