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Finding the Fourth Proportional to 661,643.60, 992,983.80 and 306,701.60

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Solution

The fourth proportional to 661,643.60, 992,983.80 and 306,701.60 is: 460,292.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,643.60 : 992,983.80 = 306,701.60 : x
  2. Step 2: Convert to fraction form
    661,643.60/992,983.80 = 306,701.60/x
  3. Step 3: Cross multiply
    661,643.60x = 992,983.80 × 306,701.60
  4. Step 4: Simplify right side
    661,643.60x = 304,549,720,234.08
  5. Step 5: Solve for x
    x = 304,549,720,234.08/661,643.60
  6. Step 6: Final answer
    x = 460,292.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.