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Finding the Fourth Proportional to 664,259.60, 995,368.80 and 494,985.80

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Solution

The fourth proportional to 664,259.60, 995,368.80 and 494,985.80 is: 741,718.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,259.60 : 995,368.80 = 494,985.80 : x
  2. Step 2: Convert to fraction form
    664,259.60/995,368.80 = 494,985.80/x
  3. Step 3: Cross multiply
    664,259.60x = 995,368.80 × 494,985.80
  4. Step 4: Simplify right side
    664,259.60x = 492,693,421,763.04
  5. Step 5: Solve for x
    x = 492,693,421,763.04/664,259.60
  6. Step 6: Final answer
    x = 741,718.18

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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.