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Finding the Fourth Proportional to 630,601.66, 870,248.64 and 344,140.17

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Solution

The fourth proportional to 630,601.66, 870,248.64 and 344,140.17 is: 474,923.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,601.66 : 870,248.64 = 344,140.17 : x
  2. Step 2: Convert to fraction form
    630,601.66/870,248.64 = 344,140.17/x
  3. Step 3: Cross multiply
    630,601.66x = 870,248.64 × 344,140.17
  4. Step 4: Simplify right side
    630,601.66x = 299,487,514,911.87
  5. Step 5: Solve for x
    x = 299,487,514,911.87/630,601.66
  6. Step 6: Final answer
    x = 474,923.45

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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.