Home / 648,318,158.28-971,932,288.95-525,191,135.37

Finding the Fourth Proportional to 648,318,158.28, 971,932,288.95 and 525,191,135.37

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Solution

The fourth proportional to 648,318,158.28, 971,932,288.95 and 525,191,135.37 is: 787,345,249.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,318,158.28 : 971,932,288.95 = 525,191,135.37 : x
  2. Step 2: Convert to fraction form
    648,318,158.28/971,932,288.95 = 525,191,135.37/x
  3. Step 3: Cross multiply
    648,318,158.28x = 971,932,288.95 × 525,191,135.37
  4. Step 4: Simplify right side
    648,318,158.28x = 510,450,222,336,413,440
  5. Step 5: Solve for x
    x = 510,450,222,336,413,440/648,318,158.28
  6. Step 6: Final answer
    x = 787,345,249.89

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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.