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Finding the Fourth Proportional to 630,557.70, 870,153.21 and 344,081.22

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Solution

The fourth proportional to 630,557.70, 870,153.21 and 344,081.22 is: 474,823.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,557.70 : 870,153.21 = 344,081.22 : x
  2. Step 2: Convert to fraction form
    630,557.70/870,153.21 = 344,081.22/x
  3. Step 3: Cross multiply
    630,557.70x = 870,153.21 × 344,081.22
  4. Step 4: Simplify right side
    630,557.70x = 299,403,378,083.72
  5. Step 5: Solve for x
    x = 299,403,378,083.72/630,557.70
  6. Step 6: Final answer
    x = 474,823.13

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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.