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Finding the Fourth Proportional to 892,403.60, 1,336,272.60 and 575,142.80

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Solution

The fourth proportional to 892,403.60, 1,336,272.60 and 575,142.80 is: 861,210.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    892,403.60 : 1,336,272.60 = 575,142.80 : x
  2. Step 2: Convert to fraction form
    892,403.60/1,336,272.60 = 575,142.80/x
  3. Step 3: Cross multiply
    892,403.60x = 1,336,272.60 × 575,142.80
  4. Step 4: Simplify right side
    892,403.60x = 768,547,564,727.28
  5. Step 5: Solve for x
    x = 768,547,564,727.28/892,403.60
  6. Step 6: Final answer
    x = 861,210.74

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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.