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Finding the Fourth Proportional to 630,886.71, 870,638.58 and 344,408.94

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Solution

The fourth proportional to 630,886.71, 870,638.58 and 344,408.94 is: 475,292.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,886.71 : 870,638.58 = 344,408.94 : x
  2. Step 2: Convert to fraction form
    630,886.71/870,638.58 = 344,408.94/x
  3. Step 3: Cross multiply
    630,886.71x = 870,638.58 × 344,408.94
  4. Step 4: Simplify right side
    630,886.71x = 299,855,710,460.91
  5. Step 5: Solve for x
    x = 299,855,710,460.91/630,886.71
  6. Step 6: Final answer
    x = 475,292.48

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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.