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Finding the Fourth Proportional to 717,828.27, 990,594.96 and 407,728.68

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Solution

The fourth proportional to 717,828.27, 990,594.96 and 407,728.68 is: 562,661.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,828.27 : 990,594.96 = 407,728.68 : x
  2. Step 2: Convert to fraction form
    717,828.27/990,594.96 = 407,728.68/x
  3. Step 3: Cross multiply
    717,828.27x = 990,594.96 × 407,728.68
  4. Step 4: Simplify right side
    717,828.27x = 403,893,975,455.45
  5. Step 5: Solve for x
    x = 403,893,975,455.45/717,828.27
  6. Step 6: Final answer
    x = 562,661.00

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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.