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Finding the Fourth Proportional to 630,635.50, 870,296.22 and 358,742.80

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Solution

The fourth proportional to 630,635.50, 870,296.22 and 358,742.80 is: 495,076.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,635.50 : 870,296.22 = 358,742.80 : x
  2. Step 2: Convert to fraction form
    630,635.50/870,296.22 = 358,742.80/x
  3. Step 3: Cross multiply
    630,635.50x = 870,296.22 × 358,742.80
  4. Step 4: Simplify right side
    630,635.50x = 312,212,496,647.02
  5. Step 5: Solve for x
    x = 312,212,496,647.02/630,635.50
  6. Step 6: Final answer
    x = 495,076.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.