Home / 425,612,062.80-638,418,094.20-280,209,805.20

Finding the Fourth Proportional to 425,612,062.80, 638,418,094.20 and 280,209,805.20

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Solution

The fourth proportional to 425,612,062.80, 638,418,094.20 and 280,209,805.20 is: 420,314,707.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,612,062.80 : 638,418,094.20 = 280,209,805.20 : x
  2. Step 2: Convert to fraction form
    425,612,062.80/638,418,094.20 = 280,209,805.20/x
  3. Step 3: Cross multiply
    425,612,062.80x = 638,418,094.20 × 280,209,805.20
  4. Step 4: Simplify right side
    425,612,062.80x = 178,891,009,811,937,248
  5. Step 5: Solve for x
    x = 178,891,009,811,937,248/425,612,062.80
  6. Step 6: Final answer
    x = 420,314,707.80

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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.