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Finding the Fourth Proportional to 526,866.60, 787,967.10 and 442,885.80

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Solution

The fourth proportional to 526,866.60, 787,967.10 and 442,885.80 is: 662,367.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,866.60 : 787,967.10 = 442,885.80 : x
  2. Step 2: Convert to fraction form
    526,866.60/787,967.10 = 442,885.80/x
  3. Step 3: Cross multiply
    526,866.60x = 787,967.10 × 442,885.80
  4. Step 4: Simplify right side
    526,866.60x = 348,979,439,457.18
  5. Step 5: Solve for x
    x = 348,979,439,457.18/526,866.60
  6. Step 6: Final answer
    x = 662,367.74

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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.