Home / 517,466,279.20-776,199,418.80-425,633,274.40

Finding the Fourth Proportional to 517,466,279.20, 776,199,418.80 and 425,633,274.40

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Solution

The fourth proportional to 517,466,279.20, 776,199,418.80 and 425,633,274.40 is: 638,449,911.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,466,279.20 : 776,199,418.80 = 425,633,274.40 : x
  2. Step 2: Convert to fraction form
    517,466,279.20/776,199,418.80 = 425,633,274.40/x
  3. Step 3: Cross multiply
    517,466,279.20x = 776,199,418.80 × 425,633,274.40
  4. Step 4: Simplify right side
    517,466,279.20x = 330,376,300,211,220,864
  5. Step 5: Solve for x
    x = 330,376,300,211,220,864/517,466,279.20
  6. Step 6: Final answer
    x = 638,449,911.60

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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.