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Finding the Fourth Proportional to 630,966.64, 870,729.41 and 344,486.72

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Solution

The fourth proportional to 630,966.64, 870,729.41 and 344,486.72 is: 475,389.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,966.64 : 870,729.41 = 344,486.72 : x
  2. Step 2: Convert to fraction form
    630,966.64/870,729.41 = 344,486.72/x
  3. Step 3: Cross multiply
    630,966.64x = 870,729.41 × 344,486.72
  4. Step 4: Simplify right side
    630,966.64x = 299,954,721,496.48
  5. Step 5: Solve for x
    x = 299,954,721,496.48/630,966.64
  6. Step 6: Final answer
    x = 475,389.19

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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.