Home / 642,701.60-964,052.40-310,925.60

Finding the Fourth Proportional to 642,701.60, 964,052.40 and 310,925.60

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Solution

The fourth proportional to 642,701.60, 964,052.40 and 310,925.60 is: 466,388.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,701.60 : 964,052.40 = 310,925.60 : x
  2. Step 2: Convert to fraction form
    642,701.60/964,052.40 = 310,925.60/x
  3. Step 3: Cross multiply
    642,701.60x = 964,052.40 × 310,925.60
  4. Step 4: Simplify right side
    642,701.60x = 299,748,570,901.44
  5. Step 5: Solve for x
    x = 299,748,570,901.44/642,701.60
  6. Step 6: Final answer
    x = 466,388.40

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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.