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Finding the Fourth Proportional to 576,899.70, 865,349.55 and 514,230.90

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Solution

The fourth proportional to 576,899.70, 865,349.55 and 514,230.90 is: 771,346.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,899.70 : 865,349.55 = 514,230.90 : x
  2. Step 2: Convert to fraction form
    576,899.70/865,349.55 = 514,230.90/x
  3. Step 3: Cross multiply
    576,899.70x = 865,349.55 × 514,230.90
  4. Step 4: Simplify right side
    576,899.70x = 444,989,477,911.10
  5. Step 5: Solve for x
    x = 444,989,477,911.10/576,899.70
  6. Step 6: Final answer
    x = 771,346.35

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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.