Home / 1,122,152.72-1,548,580.65-638,748.99

Finding the Fourth Proportional to 1,122,152.72, 1,548,580.65 and 638,748.99

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Solution

The fourth proportional to 1,122,152.72, 1,548,580.65 and 638,748.99 is: 881,479.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,122,152.72 : 1,548,580.65 = 638,748.99 : x
  2. Step 2: Convert to fraction form
    1,122,152.72/1,548,580.65 = 638,748.99/x
  3. Step 3: Cross multiply
    1,122,152.72x = 1,548,580.65 × 638,748.99
  4. Step 4: Simplify right side
    1,122,152.72x = 989,154,318,378.14
  5. Step 5: Solve for x
    x = 989,154,318,378.14/1,122,152.72
  6. Step 6: Final answer
    x = 881,479.23

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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.