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Finding the Fourth Proportional to 824,807.40, 1,237,211.10 and 404,903.40

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Solution

The fourth proportional to 824,807.40, 1,237,211.10 and 404,903.40 is: 607,355.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    824,807.40 : 1,237,211.10 = 404,903.40 : x
  2. Step 2: Convert to fraction form
    824,807.40/1,237,211.10 = 404,903.40/x
  3. Step 3: Cross multiply
    824,807.40x = 1,237,211.10 × 404,903.40
  4. Step 4: Simplify right side
    824,807.40x = 500,950,980,907.74
  5. Step 5: Solve for x
    x = 500,950,980,907.74/824,807.40
  6. Step 6: Final answer
    x = 607,355.10

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