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Finding the Fourth Proportional to 630,939.06, 870,698.86 and 344,465.72

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Solution

The fourth proportional to 630,939.06, 870,698.86 and 344,465.72 is: 475,364.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,939.06 : 870,698.86 = 344,465.72 : x
  2. Step 2: Convert to fraction form
    630,939.06/870,698.86 = 344,465.72/x
  3. Step 3: Cross multiply
    630,939.06x = 870,698.86 × 344,465.72
  4. Step 4: Simplify right side
    630,939.06x = 299,925,909,713.08
  5. Step 5: Solve for x
    x = 299,925,909,713.08/630,939.06
  6. Step 6: Final answer
    x = 475,364.31

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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.