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Finding the Fourth Proportional to 487,530.40, 731,295.60 and 425,322.40

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Solution

The fourth proportional to 487,530.40, 731,295.60 and 425,322.40 is: 637,983.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,530.40 : 731,295.60 = 425,322.40 : x
  2. Step 2: Convert to fraction form
    487,530.40/731,295.60 = 425,322.40/x
  3. Step 3: Cross multiply
    487,530.40x = 731,295.60 × 425,322.40
  4. Step 4: Simplify right side
    487,530.40x = 311,036,399,701.44
  5. Step 5: Solve for x
    x = 311,036,399,701.44/487,530.40
  6. Step 6: Final answer
    x = 637,983.60

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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.