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Finding the Fourth Proportional to 647,430.42, 893,434.41 and 357,041.84

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Solution

The fourth proportional to 647,430.42, 893,434.41 and 357,041.84 is: 492,706.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,430.42 : 893,434.41 = 357,041.84 : x
  2. Step 2: Convert to fraction form
    647,430.42/893,434.41 = 357,041.84/x
  3. Step 3: Cross multiply
    647,430.42x = 893,434.41 × 357,041.84
  4. Step 4: Simplify right side
    647,430.42x = 318,993,461,198.54
  5. Step 5: Solve for x
    x = 318,993,461,198.54/647,430.42
  6. Step 6: Final answer
    x = 492,706.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.