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Finding the Fourth Proportional to 586,691.40, 879,345.90 and 306,064.20

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Solution

The fourth proportional to 586,691.40, 879,345.90 and 306,064.20 is: 458,735.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,691.40 : 879,345.90 = 306,064.20 : x
  2. Step 2: Convert to fraction form
    586,691.40/879,345.90 = 306,064.20/x
  3. Step 3: Cross multiply
    586,691.40x = 879,345.90 × 306,064.20
  4. Step 4: Simplify right side
    586,691.40x = 269,136,299,406.78
  5. Step 5: Solve for x
    x = 269,136,299,406.78/586,691.40
  6. Step 6: Final answer
    x = 458,735.72

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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.