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Finding the Fourth Proportional to 514,830.90, 772,246.35 and 425,601.30

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Solution

The fourth proportional to 514,830.90, 772,246.35 and 425,601.30 is: 638,401.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,830.90 : 772,246.35 = 425,601.30 : x
  2. Step 2: Convert to fraction form
    514,830.90/772,246.35 = 425,601.30/x
  3. Step 3: Cross multiply
    514,830.90x = 772,246.35 × 425,601.30
  4. Step 4: Simplify right side
    514,830.90x = 328,669,050,480.26
  5. Step 5: Solve for x
    x = 328,669,050,480.26/514,830.90
  6. Step 6: Final answer
    x = 638,401.95

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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.