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Finding the Fourth Proportional to 702,079.80, 1,053,119.70 and 613,506.30

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Solution

The fourth proportional to 702,079.80, 1,053,119.70 and 613,506.30 is: 920,259.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,079.80 : 1,053,119.70 = 613,506.30 : x
  2. Step 2: Convert to fraction form
    702,079.80/1,053,119.70 = 613,506.30/x
  3. Step 3: Cross multiply
    702,079.80x = 1,053,119.70 × 613,506.30
  4. Step 4: Simplify right side
    702,079.80x = 646,095,570,604.11
  5. Step 5: Solve for x
    x = 646,095,570,604.11/702,079.80
  6. Step 6: Final answer
    x = 920,259.45

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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.