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Finding the Fourth Proportional to 630,544.95, 870,173.01 and 344,080.76

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Solution

The fourth proportional to 630,544.95, 870,173.01 and 344,080.76 is: 474,842.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,544.95 : 870,173.01 = 344,080.76 : x
  2. Step 2: Convert to fraction form
    630,544.95/870,173.01 = 344,080.76/x
  3. Step 3: Cross multiply
    630,544.95x = 870,173.01 × 344,080.76
  4. Step 4: Simplify right side
    630,544.95x = 299,409,786,261.42
  5. Step 5: Solve for x
    x = 299,409,786,261.42/630,544.95
  6. Step 6: Final answer
    x = 474,842.89

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Double scale
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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.