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Finding the Fourth Proportional to 614,266.20, 921,399.30 and 549,312.30

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Solution

The fourth proportional to 614,266.20, 921,399.30 and 549,312.30 is: 823,968.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,266.20 : 921,399.30 = 549,312.30 : x
  2. Step 2: Convert to fraction form
    614,266.20/921,399.30 = 549,312.30/x
  3. Step 3: Cross multiply
    614,266.20x = 921,399.30 × 549,312.30
  4. Step 4: Simplify right side
    614,266.20x = 506,135,968,701.39
  5. Step 5: Solve for x
    x = 506,135,968,701.39/614,266.20
  6. Step 6: Final answer
    x = 823,968.45

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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.