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Finding the Fourth Proportional to 630,549.41, 870,179.18 and 344,085.21

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Solution

The fourth proportional to 630,549.41, 870,179.18 and 344,085.21 is: 474,849.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,549.41 : 870,179.18 = 344,085.21 : x
  2. Step 2: Convert to fraction form
    630,549.41/870,179.18 = 344,085.21/x
  3. Step 3: Cross multiply
    630,549.41x = 870,179.18 × 344,085.21
  4. Step 4: Simplify right side
    630,549.41x = 299,415,784,167.50
  5. Step 5: Solve for x
    x = 299,415,784,167.50/630,549.41
  6. Step 6: Final answer
    x = 474,849.05

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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.