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Finding the Fourth Proportional to 502,415.70, 753,623.55 and 342,983.40

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Solution

The fourth proportional to 502,415.70, 753,623.55 and 342,983.40 is: 514,475.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,415.70 : 753,623.55 = 342,983.40 : x
  2. Step 2: Convert to fraction form
    502,415.70/753,623.55 = 342,983.40/x
  3. Step 3: Cross multiply
    502,415.70x = 753,623.55 × 342,983.40
  4. Step 4: Simplify right side
    502,415.70x = 258,480,367,499.07
  5. Step 5: Solve for x
    x = 258,480,367,499.07/502,415.70
  6. Step 6: Final answer
    x = 514,475.10

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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.