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Finding the Fourth Proportional to 523,780.80, 787,420.80 and 446,798.40

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Solution

The fourth proportional to 523,780.80, 787,420.80 and 446,798.40 is: 671,690.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,780.80 : 787,420.80 = 446,798.40 : x
  2. Step 2: Convert to fraction form
    523,780.80/787,420.80 = 446,798.40/x
  3. Step 3: Cross multiply
    523,780.80x = 787,420.80 × 446,798.40
  4. Step 4: Simplify right side
    523,780.80x = 351,818,353,566.72
  5. Step 5: Solve for x
    x = 351,818,353,566.72/523,780.80
  6. Step 6: Final answer
    x = 671,690.05

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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.