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Finding the Fourth Proportional to 899,994.80, 1,351,547.40 and 480,090.80

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Solution

The fourth proportional to 899,994.80, 1,351,547.40 and 480,090.80 is: 720,965.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,994.80 : 1,351,547.40 = 480,090.80 : x
  2. Step 2: Convert to fraction form
    899,994.80/1,351,547.40 = 480,090.80/x
  3. Step 3: Cross multiply
    899,994.80x = 1,351,547.40 × 480,090.80
  4. Step 4: Simplify right side
    899,994.80x = 648,865,472,503.92
  5. Step 5: Solve for x
    x = 648,865,472,503.92/899,994.80
  6. Step 6: Final answer
    x = 720,965.80

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Double scale
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Similar ratio
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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.