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Finding the Fourth Proportional to 717,999.08, 990,798.32 and 395,708.16

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Solution

The fourth proportional to 717,999.08, 990,798.32 and 395,708.16 is: 546,054.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,999.08 : 990,798.32 = 395,708.16 : x
  2. Step 2: Convert to fraction form
    717,999.08/990,798.32 = 395,708.16/x
  3. Step 3: Cross multiply
    717,999.08x = 990,798.32 × 395,708.16
  4. Step 4: Simplify right side
    717,999.08x = 392,066,980,138.29
  5. Step 5: Solve for x
    x = 392,066,980,138.29/717,999.08
  6. Step 6: Final answer
    x = 546,054.99

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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.