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Finding the Fourth Proportional to 630,535.68, 870,144.39 and 344,060.55

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Solution

The fourth proportional to 630,535.68, 870,144.39 and 344,060.55 is: 474,806.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,535.68 : 870,144.39 = 344,060.55 : x
  2. Step 2: Convert to fraction form
    630,535.68/870,144.39 = 344,060.55/x
  3. Step 3: Cross multiply
    630,535.68x = 870,144.39 × 344,060.55
  4. Step 4: Simplify right side
    630,535.68x = 299,382,357,402.82
  5. Step 5: Solve for x
    x = 299,382,357,402.82/630,535.68
  6. Step 6: Final answer
    x = 474,806.37

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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.