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Finding the Fourth Proportional to 638,402.40, 957,603.60 and 559,605.60

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Solution

The fourth proportional to 638,402.40, 957,603.60 and 559,605.60 is: 839,408.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,402.40 : 957,603.60 = 559,605.60 : x
  2. Step 2: Convert to fraction form
    638,402.40/957,603.60 = 559,605.60/x
  3. Step 3: Cross multiply
    638,402.40x = 957,603.60 × 559,605.60
  4. Step 4: Simplify right side
    638,402.40x = 535,880,337,140.16
  5. Step 5: Solve for x
    x = 535,880,337,140.16/638,402.40
  6. Step 6: Final answer
    x = 839,408.40

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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.