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Finding the Fourth Proportional to 549,117.40, 823,676.10 and 424,547.80

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Solution

The fourth proportional to 549,117.40, 823,676.10 and 424,547.80 is: 636,821.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,117.40 : 823,676.10 = 424,547.80 : x
  2. Step 2: Convert to fraction form
    549,117.40/823,676.10 = 424,547.80/x
  3. Step 3: Cross multiply
    549,117.40x = 823,676.10 × 424,547.80
  4. Step 4: Simplify right side
    549,117.40x = 349,689,876,167.58
  5. Step 5: Solve for x
    x = 349,689,876,167.58/549,117.40
  6. Step 6: Final answer
    x = 636,821.70

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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.