Home / 738,901.03-1,019,683.58-399,368.23

Finding the Fourth Proportional to 738,901.03, 1,019,683.58 and 399,368.23

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Solution

The fourth proportional to 738,901.03, 1,019,683.58 and 399,368.23 is: 551,128.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,901.03 : 1,019,683.58 = 399,368.23 : x
  2. Step 2: Convert to fraction form
    738,901.03/1,019,683.58 = 399,368.23/x
  3. Step 3: Cross multiply
    738,901.03x = 1,019,683.58 × 399,368.23
  4. Step 4: Simplify right side
    738,901.03x = 407,229,226,504.66
  5. Step 5: Solve for x
    x = 407,229,226,504.66/738,901.03
  6. Step 6: Final answer
    x = 551,128.24

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.