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Finding the Fourth Proportional to 607,619.60, 911,429.40 and 292,000.40

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Solution

The fourth proportional to 607,619.60, 911,429.40 and 292,000.40 is: 438,000.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,619.60 : 911,429.40 = 292,000.40 : x
  2. Step 2: Convert to fraction form
    607,619.60/911,429.40 = 292,000.40/x
  3. Step 3: Cross multiply
    607,619.60x = 911,429.40 × 292,000.40
  4. Step 4: Simplify right side
    607,619.60x = 266,137,749,371.76
  5. Step 5: Solve for x
    x = 266,137,749,371.76/607,619.60
  6. Step 6: Final answer
    x = 438,000.60

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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.