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Finding the Fourth Proportional to 630,966.89, 870,729.75 and 344,486.98

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Solution

The fourth proportional to 630,966.89, 870,729.75 and 344,486.98 is: 475,389.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,966.89 : 870,729.75 = 344,486.98 : x
  2. Step 2: Convert to fraction form
    630,966.89/870,729.75 = 344,486.98/x
  3. Step 3: Cross multiply
    630,966.89x = 870,729.75 × 344,486.98
  4. Step 4: Simplify right side
    630,966.89x = 299,955,061,973.66
  5. Step 5: Solve for x
    x = 299,955,061,973.66/630,966.89
  6. Step 6: Final answer
    x = 475,389.54

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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.