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Finding the Fourth Proportional to 664,365.20, 996,547.80 and 487,218.20

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Solution

The fourth proportional to 664,365.20, 996,547.80 and 487,218.20 is: 730,827.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,365.20 : 996,547.80 = 487,218.20 : x
  2. Step 2: Convert to fraction form
    664,365.20/996,547.80 = 487,218.20/x
  3. Step 3: Cross multiply
    664,365.20x = 996,547.80 × 487,218.20
  4. Step 4: Simplify right side
    664,365.20x = 485,536,225,329.96
  5. Step 5: Solve for x
    x = 485,536,225,329.96/664,365.20
  6. Step 6: Final answer
    x = 730,827.30

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Double scale
Find fourth proportional to 664,366.20, 996,549.30 and 487,219.20
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.