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Finding the Fourth Proportional to 630,960.48, 870,727.44 and 404,606.88

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Solution

The fourth proportional to 630,960.48, 870,727.44 and 404,606.88 is: 558,358.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,960.48 : 870,727.44 = 404,606.88 : x
  2. Step 2: Convert to fraction form
    630,960.48/870,727.44 = 404,606.88/x
  3. Step 3: Cross multiply
    630,960.48x = 870,727.44 × 404,606.88
  4. Step 4: Simplify right side
    630,960.48x = 352,302,312,828.79
  5. Step 5: Solve for x
    x = 352,302,312,828.79/630,960.48
  6. Step 6: Final answer
    x = 558,358.76

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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.