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Finding the Fourth Proportional to 661,645.60, 992,986.80 and 306,703.60

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Solution

The fourth proportional to 661,645.60, 992,986.80 and 306,703.60 is: 460,295.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,645.60 : 992,986.80 = 306,703.60 : x
  2. Step 2: Convert to fraction form
    661,645.60/992,986.80 = 306,703.60/x
  3. Step 3: Cross multiply
    661,645.60x = 992,986.80 × 306,703.60
  4. Step 4: Simplify right side
    661,645.60x = 304,552,626,312.48
  5. Step 5: Solve for x
    x = 304,552,626,312.48/661,645.60
  6. Step 6: Final answer
    x = 460,295.70

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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.