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Finding the Fourth Proportional to 630,924.93, 870,643.45 and 344,389.66

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Solution

The fourth proportional to 630,924.93, 870,643.45 and 344,389.66 is: 475,239.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,924.93 : 870,643.45 = 344,389.66 : x
  2. Step 2: Convert to fraction form
    630,924.93/870,643.45 = 344,389.66/x
  3. Step 3: Cross multiply
    630,924.93x = 870,643.45 × 344,389.66
  4. Step 4: Simplify right side
    630,924.93x = 299,840,599,980.61
  5. Step 5: Solve for x
    x = 299,840,599,980.61/630,924.93
  6. Step 6: Final answer
    x = 475,239.74

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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.