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Finding the Fourth Proportional to 579,486.70, 869,230.05 and 549,962.20

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Solution

The fourth proportional to 579,486.70, 869,230.05 and 549,962.20 is: 824,943.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,486.70 : 869,230.05 = 549,962.20 : x
  2. Step 2: Convert to fraction form
    579,486.70/869,230.05 = 549,962.20/x
  3. Step 3: Cross multiply
    579,486.70x = 869,230.05 × 549,962.20
  4. Step 4: Simplify right side
    579,486.70x = 478,043,670,604.11
  5. Step 5: Solve for x
    x = 478,043,670,604.11/579,486.70
  6. Step 6: Final answer
    x = 824,943.30

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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.