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Finding the Fourth Proportional to 630,634.71, 870,275.66 and 344,154.80

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Solution

The fourth proportional to 630,634.71, 870,275.66 and 344,154.80 is: 474,933.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,634.71 : 870,275.66 = 344,154.80 : x
  2. Step 2: Convert to fraction form
    630,634.71/870,275.66 = 344,154.80/x
  3. Step 3: Cross multiply
    630,634.71x = 870,275.66 × 344,154.80
  4. Step 4: Simplify right side
    630,634.71x = 299,509,542,221.18
  5. Step 5: Solve for x
    x = 299,509,542,221.18/630,634.71
  6. Step 6: Final answer
    x = 474,933.49

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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.