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Finding the Fourth Proportional to 514,920.40, 772,380.60 and 346,521.40

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Solution

The fourth proportional to 514,920.40, 772,380.60 and 346,521.40 is: 519,782.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,920.40 : 772,380.60 = 346,521.40 : x
  2. Step 2: Convert to fraction form
    514,920.40/772,380.60 = 346,521.40/x
  3. Step 3: Cross multiply
    514,920.40x = 772,380.60 × 346,521.40
  4. Step 4: Simplify right side
    514,920.40x = 267,646,406,844.84
  5. Step 5: Solve for x
    x = 267,646,406,844.84/514,920.40
  6. Step 6: Final answer
    x = 519,782.10

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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.