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Finding the Fourth Proportional to 523,315.40, 785,847.90 and 346,605.80

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Solution

The fourth proportional to 523,315.40, 785,847.90 and 346,605.80 is: 520,488.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,315.40 : 785,847.90 = 346,605.80 : x
  2. Step 2: Convert to fraction form
    523,315.40/785,847.90 = 346,605.80/x
  3. Step 3: Cross multiply
    523,315.40x = 785,847.90 × 346,605.80
  4. Step 4: Simplify right side
    523,315.40x = 272,379,440,057.82
  5. Step 5: Solve for x
    x = 272,379,440,057.82/523,315.40
  6. Step 6: Final answer
    x = 520,488.10

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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.